000
00310nam a2200121Ia 4500
008
190711s9999 xx 000 0 und d
082
_a
541.224 C322
100
_a
CARTMELL,E
245
0
_a
VALENCY AND MOLECULAR STRUCTURE
260
_a
LONDON
_b
Butterworth-Heinemann
_c
1977
300
_a
23X15
942
_c
BK
_2
DDC
999
_c
17052
_d
17052