Nauchno otkritie i negovata pravna zakrila
By: Georgi Dimitrov Tanev, Vladimir I͡A︡kubov Vrana.
Publisher: Vissh mashinno-elektrotekhnicheski in-t "V.I. Lenin," Otd-nie za sleddiplomna kvalifikat͡s︡ii͡a︡; Shkola po patentno delo
Published: 1984
Place of publication: Sofii͡a︡
Language: bul
Number of pages: 89