Gerald H Elkan. (1987). Symbiotic Nitrogen fixation technology. Marcel Dekker INC.
Chicago Edition CitationGerald H Elkan. Symbiotic Nitrogen Fixation Technology. New York: Marcel Dekker INC, 1987.
MLA Edition CitationGerald H Elkan. Symbiotic Nitrogen Fixation Technology. Marcel Dekker INC, 1987.
Warning: These citations may not always be 100% accurate.