Douglas Helms collection, 1930?-2011
1970-2000
Helms, Douglas
The Douglas Helms Collection contains articles, books, reports, correspondence, photographs, films, oral histories, speeches, and research materials related to the history of the U.S. Department of Agriculture (USDA) Soil Conservation Service, and its successor agency, the Natural Resources Conservation Service.
显示更多 [+] 显示较少 [-]AGROVOC关键词
书目信息
其它主题
Navajo indians
语言
英语
注释
Douglas Helms Collection. Special Collections, USDA National Agricultural Library.
Douglas Helms (1945-2018) served as the historian for the USDA Soil Conservation Service and the Natural Resources Conservation Service from 1981 to 2011.
类型
Three-Dimensional Moving Image; Text; Monograph; Book
2024-02-27
2025-07-19
MODS