TY - BOOK AU - Anderson, M. S. [et al.] TI - Selenium in agriculture PY - 1961/// CY - Washington PB - Agricultural Research Service, U.S. Dept. of Agriculture in cooperation with the Geological Survey, U.S. Dept. of the Interior KW - Sulphur FertilizersOrganic Compounds N1 - Bibliography: p.56-62 ER -