Annual meeting of the American Society of Agronomy New Orleans, E. U., Cowan, J. R., & Robertson, L. S. (1969). Papers. Wisconsin, Estados Unidos de América: American Society of Agronomy Inc. ; Crop Science society of America, Inc., Soil Science Society of America, Inc..
Chicago Style CitationAnnual meeting of the American Society of Agronomy New Orleans, Estados Unidos), J. Ritchie Cowan, and L. S. Robertson. Papers. Wisconsin, Estados Unidos de América: American Society of Agronomy Inc. ; Crop Science society of America, Inc., Soil Science Society of America, Inc., 1969.
MLA CitationAnnual meeting of the American Society of Agronomy New Orleans, Estados Unidos), J. Ritchie Cowan, and L. S. Robertson. Papers. Wisconsin, Estados Unidos de América: American Society of Agronomy Inc. ; Crop Science society of America, Inc., Soil Science Society of America, Inc., 1969.