Profiles in the History of the U.S. Soil Survey
Douglas Helms is the historian for the Natural Resources Conservation Service, U.AS. Department of Agriculture (USDA), Washington, D.C.
Anne B. W. Effland is an agricultural historian and works as a social science analyst with the Economic Research Service, USDA, Washington, D.C.
Patricia J. Durana is a natural resource manager with the Animal Husbandry and Clean Water Programs Division, Natural Resources Conservation Service, USDA, Washington, D.C.
354 pages; ISBN 9780470376737
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Title: Profiles in the History of the U.S. Soil Survey
Author: Douglas Helms; Anne B. W. Effland; Patricia J. Durana