Soil and water conservation research and education progress and needs. Executive summary. 的封面图片
Soil and water conservation research and education progress and needs. Executive summary.
TITLE_DISPLAY:
Soil and water conservation research and education progress and needs. Executive summary.
出版信息:
[Washington, D.C] : U.S. Dept. of Agriculture, Soil Conservation Service,
格式:
持续资源
物理描述:
v. ; 28 cm.