00621nam 22001933 4500001000700000100004100007101000800048102000700056105001800063200011500081205003000196210003700226215001800263606002500281675002700306700003400333701002900367702003100396306496 a20170915d u||y0romy50 ba arus aRU a||||||||||||| aTehnologiâ obrabotki almazov v brillianty eučebnik dlâ PTUfV. I. Epifanov, A. Â. Pesina, L. V. Zykov aIzd. 3-e, pererab. i dop. aMoskvacVysšaâ školad1982 a352 s. cil. aDiamante, prelucrare a671.152 (075.32)=161.1 aEpifanovbValentin Ivanovič aPesinabAnna Âkovlevna aZykovbLeonid Viktorovič