00523nam a2200181Ia 4500 OSt 20230308160530.0 230105s9999||||xx |||||||||||||| ||und|| 0-935702-61-X Chuka University Library QD 471 D45 1989 Dekock. Roger L and Harry B. Gray 4380 Chemical structure and bonding/ University science books Mill valley 1989 491p Chemical structure Chemical bonds 8471 BK lcc 6997 6997