00282nam a2200109 i 4500001000300000245008300003260002100086040000800107041000800115080000800123008004100131bg 0aChal'kogenidy perechodnych metallov :bna osnove gallija, germanija, mys'jaka. aTibilisi,c1974. cBPK apol a546 s pl f |000 0 pol