(1993). The Living soil science and sustainable agriculture with your guide, the Earthworm. Ames, Iowa: Agricultural Education and Studies Iowa State University.
Chicago Style CitationThe Living Soil Science and Sustainable Agriculture With Your Guide, the Earthworm. Ames, Iowa: Agricultural Education and Studies Iowa State University, 1993.
MLA CitationThe Living Soil Science and Sustainable Agriculture With Your Guide, the Earthworm. Ames, Iowa: Agricultural Education and Studies Iowa State University, 1993.
Warning: These citations may not always be 100% accurate.