Society of the Sigma Xi -- Periodicals.

Sigma Xi, the Scientific Research Society of North America -- Periodicals.

Sigma Xi, the Scientific Research Society.

Sigma Xi, the Scientific Research Society of North America. fast (OCoLC)fst00567858

Society of the Sigma Xi. fast (OCoLC)fst00569815

Sigma Xi, the Scientific Research Society of North America. nli

Society of the Sigma Xi. nli

Greek letter societies -- Periodicals.

Science -- Periodicals.

Science and technology.

Periodicals.

Periodicals. lcgft

Periodicals. lcsh

Periodicals. rbgenr