Companion, Audrey L. Chemical bonding / Audrey L. Companion. - TMH ed. - New Delhi : Tata McGraw- Hill, 1980 - x, 179p. : ill. ; 22x14 cm. Includes appendix and index. ISBN: 0-07-099261-4 19.50 Subjects--Topical Terms: MOLECULAR BONDS AND VALENCY Dewey Class. No.: 541.224 / COM-CHE