Steam turbines /
Պապիկյան, Ստեփան Ռաֆիկի, 1957-
Steam turbines / Stepan Papikyan. - Yerevan : [S. n.], 2009. - 22 p. : table ; 21 cm. - 621.438 (NLA) .
Steam-turbines
621.438 (NLA)
Steam turbines / Stepan Papikyan. - Yerevan : [S. n.], 2009. - 22 p. : table ; 21 cm. - 621.438 (NLA) .
Steam-turbines
621.438 (NLA)