Thermal insulations in the petrochemical industry : a symposium sponsored by ASTM Committee C-16 on Thermal and Cryogenic Insulating Materials in cooperation with the American Institute of Chemical Engineers, 12 March 1974, Tulsa, Okla. / F. S. [i.e. F. A.] Govan, symposium chairman, J. S. Kummins, symposium cochairman.