000 00323nam a2200121Ia 4500
001 22681
008 170722s9999 xx 000 0 und d
100 _aKetelaar, Jaa
245 _aChemical constitution
_bAn introduction to the theory of the chemical bond.Ed2.1958 /
250 _a2nd ed.
260 _c1958.
942 _cGEN
999 _c55474
_d55474