Search for: Title Author Subject Series that begins with: 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings > Browse Headings # Sigma Xi, the Scientific Research Society of North America. 1 SEE ALSO earlier heading: Scientific Research Society of America 1 SEE ALSO later heading: Sigma Xi, the Scientific Research Society. 1 SEE ALSO earlier heading: Society of the Sigma Xi. 1 Sigman, Carl. 2 Sigman, Fred Irving 2 Sigman, Hugo. 1 Sigman, Mariano. 1 Sigman, Mariano, 1972- 2 Sigman, Md, Christine. 1 Sigman, Stephanie 4 Sigman, Stephanie, 1987- 10 Sigmore, Alex 1 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings >