Davidovic, S. M. Traqtorlar : Traqtor texniqlәri mәktәblәrindәn өtry dәrs kitabь / S. M. Davidovic; Q.T. Talviq - Baqь : Kәnd tәsәrrifat şө'bәs, 1937. - 394 p.. : ill.; 21 cm. - 629.114.2 (NLA) . Subjects--Topical Terms: Transport vehicle engineering Universal Decimal Class. No.: 629.114.2 (NLA)