Kvalifikat͡s︡ii͡a︡ta, prekvalifikat͡s︡ii͡a︡ta i usŭvŭrshenstvuvaneto na kvalifikat͡s︡ii͡a︡ta na zhenite v uslovii͡a︡ta na nauchno-tekhnicheskii͡a︡ progres
By: A. Manolov, L. Dobroslavska.
Publisher: Nauchnoizsl. in-t po truda pri Kom-ta po truda i rabotnata zaplata
Published: 1977
Place of publication: [Sofia?]
Language: bul
Number of pages: 14