000 00415nam a2200157Ia 4500
008 160615s9999 xx 000 0 und d
100 _aRAY(P)
245 _aThe theory of valency and the structure of chemical compounds
260 _aCalcutta
260 _bIndian Association for the Cultivation of Science
260 _c1946
300 _ai p. + 81
942 _cBooks
999 _c3320
_d3320