Bioinorganic chemistry : a symposium co-sponsored by the Division of inorganic Chemistry of the American Chemical Society and the Chemical Institute of Canada at Virginia Polytechnic Institute and State University, Blacksburg, Va. June 22-25, 1970. Raymond dessy ; John Dillard and Lary Taylor, symposium co-chairmen.

Origin and refining of petroleum A symposium co-sponsored by the Division of Petroleum Chemistry of the American Chemical Society and the Canadian Society for chemical engineering of the Chemical Institute of Canada at the ACS-Cıc joint conference, Toronto, Canada, May 25-28, 1970. H. G. McGrath and M. E. Charles symposium chairman.

Pesticides identification at the residue level : a symposium sponsored by the division of Perticide Chemistry of the American Chemical Society at the Joint Conference of the Canada and the American Chemical Society at Toronto, Ontario, Canada May 26-27, 1970. Francis J. Biros symposium chairman.