Soil Micromorphology
- Sites of interest, books and events related to soil observation at the microscopic scale. Soil Science Society of America, Soil mineralogy div (S9)
- https://www.soils.org/divisions/s09/micromorph/

Lecture notes on the major soils of the world
- Description, characteristics, geography, landforms and genesis of the 30 Reference Soil Groups (WRB), grouped in 10 sets
- http://www.fao.org/DOCREP/003/Y1899E/Y1899E00.HTM

World Reference Base for soil resources
- The WRB project is an international soil classification framework (FAO, IUSS, ISRIC): Reference documents, world soil atlas, classification key, news and forum.
- http://www.fao.org/ag/agl/agll/wrb/default.stm

European Soil Portal
- European soil related databases, maps, documents, publications, projects, news and mailing-list at the European Commission, Joint Research Centre.
- http://eusoils.jrc.ec.europa.eu/

Digital Soil Mapping working group (IUSS)
- News, conferences & tools related to Digital Soil Mapping. International Union of Soil Sciences, Soil geography (1.2) and Pedometrics (1.5) commissions.
- http://digitalsoilmapping.org

Pedometrics
- Newsletter, conferences, jobs & articles related to the mathematical and statistical measurement of soil distribution and genesis (Commission 1.5, International Union of Soil Sciences).
- http://www.pedometrics.org/

A Compendium of On-Line Soil Survey Information
- A extensive collection of links and information to soil classification systems.
- http://www.itc.nl/~rossiter/research/rsrch_ss_class.html#nc

Soil classification in South Africa
- Classification and survey information prepared by AGIS.
- http://www.agis.agric.za/agisweb/$WEB_HOME?MIval=soils.html

European Digital Archive on Soil Maps of the World
- Aims to provide and preserve soil maps from all over the world. Information about and access to maps and publications available online.
- http://eusoils.jrc.it/esdb_archive/EuDASM/indexes/about.htm

Italian National Center for Soil Mapping
- Description of activities and services. (English side under development)
- http://www.soilmaps.it/

New Zealand Soils Portal
- Provides access to Nationally Significant Soils Databases, but also a wealth of explanatory information about current and historical soil naming schemes used in New Zealand.
- http://soils.landcareresearch.co.nz/contents/index.aspx

Soil Maps of Ireland
- A collection of maps.
- http://eusoils.jrc.it/esdb_archive/EuDASM/lists/ireland.htm

Lang Penetrometer
- Description and usage information for this soil compaction meter.
- http://www.langanalytical.com/

World Soil Resources
- Links to data and information about global soils.
- http://soils.usda.gov/use/worldsoils/

Soils Data Mart
- Data and other resources on soils, soil taxonomy, and U.S. soil surveys.
- http://soildatamart.nrcs.usda.gov/

Soils of Israel
- A set of images to illustrate the soils of the arid part of Israel. Includes a description list of the soil groups in English and Hebrew. Also available is a conversion table from Dan's to both the USDA and FAO classification systems.
- http://cals.arizona.edu/OALS/soils/israeli.html

The Australian Soil Classification
- Explains classification schemes in general. Detailed description of australian soil types with glossary and references. Based on a book by the CSIRO.
- http://www.clw.csiro.au/aclep/asc/asc.htm

NRCS Soils Gallery
- Contains representative pictures of soil orders plus profile and landscape pictures of more specific soils.
- http://soils.usda.gov/gallery/

Swedish National Survey of Forest Soils and Vegetation
- A long term inventory of permanent sample plots of the Swedish National Forest. Short english summary, the details are in Swedish.
- http://www-sml.slu.se/sk/skeng.htm

Distribution Maps of Dominant Soil Orders
- Maps showing U.S. land area in different soil orders.
- http://soils.usda.gov/technical/classification/orders/

NRCS Soil Survey
- Lists soil surveys, survey programs, soil survey technology, standards, data and references.
- http://soils.usda.gov/survey/

Global Soil Regions
- Map showing world wide distribution of soil types.
- http://www.nrcs.usda.gov/technical/worldsoils/mapindex/

Soil Survey of the State of Hawaii
- Soil maps and details for all Hawaiian islands.
- http://www.ctahr.hawaii.edu/soilsurvey/soils.htm

Soil profiles of Europe
- Pictures and descriptions of common soil types found in Central Europe.
- http://www.soilscience.uni-goettingen.de/en/soilsidx.html

Soils of Canada
- Online maps.
- http://sis.agr.gc.ca/cansis/nsdb/slc/webmap.html

Soil Survey Photography
- Principles and Techniques is a presentation on Soil Survey photography. [PowerPoint Presentation]
- ftp://ftp-fc.sc.egov.usda.gov/NSSC/Photography/phtgrphy.ppt

Major Soils of Tuapaka Farm, New Zealand
- Information, soil characterization and description and soil use. From Massey University. Photos.
- http://soils-earth.massey.ac.nz/tuapaka/tuapaka.htm

Dedcoastland
- The Mediterranean scientific network research on soil degradation and conservation, land use, desertification and erosion.
- http://medcoastland.iamb.it

The Twelve Soil Orders
- This system for classifying soils is one of the most widely used soil classification systems in the world. Collection of information and images to illustrate the distribution, properties, ecological significance, and use of these 12 soil orders.
- http://soils.ag.uidaho.edu/soilorders/

Soil surveys of Ontario
- Canada. List of surveys and maps.
- http://sis.agr.gc.ca/cansis/publications/on/index.html

Soils of New Brunswick
- Canada. Soil surveys and maps from CanSIS.
- http://sis.agr.gc.ca/cansis/publications/nb/index.html

The Soils of Pennsylvania
- Maps and description.
- http://agguide.agronomy.psu.edu/CM/Sec1/sec11a.htm

Bulk Density Determination
- Detailed description to determine the bulk density of soil.
- http://www.geology.iupui.edu/research/SoilsLab/procedures/bulk/Index.htm

Soil Survey Information for Massachusetts and New England
- Featuring soil information, ground penetrating radar, GIS, and soil profile photos.
- http://nesoil.com/index.html

Washington State Soils
- Interactive maps and pictures.
- http://remotesens.css.wsu.edu/washingtonsoil/index.htm

Texture AutoLookup
- TAL is a group of programs to determine soil texture classes based on major soil classification schemes (USDA, UK, Canada, International and others).
- http://www.agri.upm.edu.my/~chris/tal/

Canadian Soil Information System
- Information on soil surveys and analysis but also on the Environmental Sustainablility of Canadian Agriculture.
- http://sis.agr.gc.ca/cansis/intro.html