00290nam a2200109Ia 4500008004100000040003800041100001900079245003200098260001900130300001700149653001400166211214s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aPauling, Linus 0aNature of the chemical bond  aNEW YORKc1948  aXVI, 450p p.  aCHEMISTRY