00341nam a2200121Ia 4500008004100000040001500041041001200056082001600068100001600084245007400100260003400174300001100208230917s9999||||xx |||||||||||||| ||und||  e6718aMAIN  aEnglish  a541.28 A53M  aAtkins, P W 0aMolecular quantum mechanics: An introduction to quantum chemistry. V1  aOxfordbClarendon Pressc1970  a229 p.