00426nam a22001457i 4500001001000000005001700010008004100027082002300068100001700091245003800108250001000146260005100156300001700207650005600224SXC01970320260819093653.0260101s1979    ii            000 0 eng d  a541.224 MCW-C3222  aMcweeny, Roy10aCoulson's valence /cMcweeny, Roy  a3 ed.  abEnglish Language Book Society, London,c1979  ap. ;c22 cm. 0aMolecular bonds and valances; Theoretical chemistry