Title from PDF cover (JSTOR, viewed June 24, 2011)
Place of publication varies
Issuing Body
Volumes for 1942-<Nov./Dec. 1972> issued by the Society of the Sigma Xi and the Scientific Research Society of America; <Jan./Feb. 1974-> by Sigma Xi, the Scientific Research Society of North America; <Nov./Dec. 1979-> by Sigma Xi, the Scientific Research Society