Nauchna sesi͡ia, posvetena na 150-godishninata ot rozhdenieto na Fridrikh Engels
By: Vissh mashinno-elektrotekhnicheski institut "V.I. Lenin."
Series: Izvesti͡ia na VMEI "Lenin". Izvŭnredno izdanie
Publisher: Institut
Published: 1972
Place of publication: Sofi͡ia
Language: bul
Number of pages: 384
Notes: Summaries in Russian.