National handbook of conservation practices /
Soil Conservation Service, U. S. Dept. of Agriculture.

APA Citation

United States. Soil Conservation Service. (1977). National handbook of conservation practices. [Washington]: U. S. Dept. of Agriculture, Soil Conservation Service .

MLA Citation

United States. Soil Conservation Service. National Handbook of Conservation Practices. [Washington]: U. S. Dept. of Agriculture, Soil Conservation Service , 1977.

Warning: These citations may not always be complete (especially for serials).