00285nam a22001217a 4500020001500000082001400015100001700029100001700046245004600063260002200109300001000131650002200141  a5030007784  a546.1 TRI  aTrifonov,D.N  aTrifonov,V.D  aChemical Elements:Hoe they were discovers  aMIRbMoscowc1982  a264p.  achemical elements