000 00280nam a2200121Ia 4500
008 170101s1956 xx 000 0 und d
082 _a541.22 C23V
100 _aCARTMELL, E
245 0 _aValency and molecular structure
260 _bN.Y
_c1956
300 _a256p
942 _2ddc
_cB
999 _c3660
_d3660