The Encyclopedia of chemistry. [electronic resource] / Edited by Clifford A. Hampel [and] Gessner G. Hawley.. — 3d ed.. — New York, : Van Nostrand Reinhold, [1973]. — xviii, 1198 p. : illus. 26 cm.
Second ed., 1966, edited by G. L. Clark and G. G. Hawley.