Caldwell, A., C., & Seim, E. R. (1972). Sulfur Studies in the Field on a Sulfur-Deficient Minnesota Soil. (y.y.): Agircultural Experiment Station.
Chicago Style CitationCaldwell, A., C., and E.C.; Rehm Seim. Sulfur Studies in the Field On a Sulfur-Deficient Minnesota Soil. (y.y.): Agircultural Experiment Station, 1972.
MLA CitationCaldwell, A., C., and E.C.; Rehm Seim. Sulfur Studies in the Field On a Sulfur-Deficient Minnesota Soil. (y.y.): Agircultural Experiment Station, 1972.
Warning: These citations may not always be 100% accurate.