McGraw-Hill encyclopedia of science & technology : an international reference work. - 6th ed. - New York : McGraw-Hill Publishing Company, 1987 - xxv,659p. : ill. ; 29cm. - CLI-CYT . ISBN: 0-07-079292-5 Subjects--Topical Terms: Science, Dictionaries, Technology LC Class. No.: REF Q121.M3 Vol. 4