00646nam a2200217 a 450000100060000000300080000600500170001400800410003103500190007204000310009104100080012208200260013010000410015624500670019726000420026430000330030650000190033965000360035865000150039465000190040972094BD-RjUL20211209082218.0170513s1927    enka          001 0 eng    a(BD-RjUL)72310  aDLC/ICUcICUdBD-RjULbeng  aeng  223a541.224bSIE 19271 aSidgwick, Nevil Vincent,d1873-1952.14aThe electronic theory of valency /cby Nevil Vincent Sidgwick   aOxford :bThe Clarendon press,c1927.  axi, 310 p. :bill. ;c25 cm.  aIncludes index 0aValence (Theoretical chemistry) 0aElectrons. 0aAtomic theory.