Soils, crops, and fertilizer use :
what, how, and why guide /
by Dave Leonard.
APA Citation
Leonard, D. K., Peace Corps (U.S.). Information Collection and Exchange. (1980). Soils, crops, and fertilizer use: what, how, and why guide. 3rd ed. Washington, D.C.: Peace Corps, Information Collection & Exchange .
MLA Citation
Leonard, David K, and Peace Corps (U.S.). Information Collection and Exchange. Soils, Crops, And Fertilizer Use: What, How, And Why Guide. 3rd ed. Washington, D.C.: Peace Corps, Information Collection & Exchange , 1980.