00327nam a22001217a 4500082001600000100003400016245003400050260002200084300000900106505005000115650002200165700001800187  a541.224 THE  aTheory of valency in progress  aTheory of valency in progress  aMoscowbMirc1980  a262p  aTranslated form Russian by Alexander Rosinkin  atheory of valency  aKuznetsov,V.I