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Soil Classification

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Soil Taxonomy - principal reference to soil classification.

Keys to Soil Taxonomy - taxonomic keys for field classification.

Official Soil Series Descriptions (OSD) - standard descriptions and characteristics of soil series.

Soil Series Classification Database (SC) - soil classification and series names.

SC/OSD Maintenance Tool - add/edit/delete soil series classification and Official Series Description (eAuth and NASIS OSD group membership required)

SC/OSD Maintenance Tool User Guide (PDF; 1.3 MB)

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Soil Classification Report Tool - several reports of soil classifications by Major Land Resource Area regional office

Universal Soil Classification System - a Working Group under Commission 1.4 (Soil Classification) which is part of Division 1 (Soil in Space and Time) of the International Union of Soil Sciences (IUSS)

Java Newhall Simulation Model (jNSM) –  A traditional soil climate simulation model (software, user’s guide, and sample datasets)

Distribution Maps of Dominant Soil Orders - images and maps.

The Twelve Orders of Soil Taxonomy - poster.

International Committee on Soil Taxonomy (ICOMTAX)

Historical International Committee Recommendations (ICOMFAM, ICOMID, etc.)

Soil Taxonomy Forum

The Guy Smith Interviews: Rationale for Concepts in Soil Taxonomy