A symp. presented on december 27-29, 1955, at the atlanta meeting of the American Assoc. for the advancement of science and cosponsored by rhe Oak Ridge Inst. of nuclear studies, under contract with the U.S. Atomic Energy Commission
(1957)
Proceedings of a symposium sponsored by the Soil science society of America and held at the Palmer House in Chicago, Illinois, February 14 and 15, 1968
(1968)
