00495nam a22002173 44500 99638 5-07-000336-4 99638 20130928 frey50 rus RU Operacionnye sistemy Moskva Znanie 1990 48 s. 1 Sisteme de operare (softuri) 17622 004.451.9 MS-DOS SR/M Četverikov V. N. Cvetkov V. Â. BK 0 0 2016-11-28 189491 SC SC DEP2 SC00065619 0.40 PS SC21742 004 O-61 0 BK 0.40 2016-11-28