skip to main content
Show Results with:
Result Number Material Type Add to My Shelf Action Record Details and Options
Material Type:
Add to e-Shelf

Evaluation of conceptual models of natural organic matter (humus) from a consideration of the chemical and biochemical processes of humification / by Robert L. Wershaw.

R. L Wershaw Geological Survey (U.S.)

Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, CO : U.S. Geological Survey, Information Services distributor 2004

Online access

Material Type:
Add to e-Shelf

Managing soil organic matter : the key to air and water quality.

United States. Natural Resources Conservation Service, issuing body. Soil Quality Institute (U.S.), issuing body.

Auburn, AL : Soil Quality Institute 2003

Online access

Material Type:
Add to e-Shelf

Biogeochemical processes influencing formation and stabilization of soil organic matter and soil structure ... annual report.

Soil Resource Management National Program (U.S.); United States. Agricultural Research Service.

Washington, D.C. : U.S. Dept. of Agriculture, Agricultural Research Service 2006

Online access

Material Type:
Add to e-Shelf

Rangeland soil quality - organic matter / USDA, Natural Resources Conservation Service.

United States. Natural Resources Conservation Service, issuing body.; Soil Quality Institute (U.S.), author.; Grazing Lands Technology Institute (U.S.), author.; National Soil Survey Center (U.S.), author.

Auburn, Ala. : USDA, Natural Resources Conservation Service 2001

Online access

Personalize your results

  1. Edit

Refine Search Results

Refine My Results


  1. Books  (3)
  2. Annuals  (1)
  3. More options open sub menu

Date Range 

From To

Suggested New Searches

Ignore my query and look for everything

by this author/creator:

  1. Wershaw, R. L

Searching Remote Databases, Please Wait