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#1

Soil Taxonomy: A Basic System of Soil Classification for Making and Interpreting Soil Surveys (S. Hrg.)

Natural Resources Conservation Service (

53.99 Mb

#2

Field book for describing and sampling soils

Schoeneberger, P., Wysocki D., Benham E. & Broderson, W. eds. Natural Resources Conservation Service, National Soil Survey Center, Lincoln, NE.

1.54 Mb