20 godini
By: Tekhnikum po industrialna khimii͡a︡ "Prof. d-r Asen Zlatarov".
Publisher: Tekhnikum po industrialna khimii͡a︡ "Prof. d-r Asen Zlatarov"
Published: 1980
Place of publication: Sofii͡a︡
Language: bul
Number of pages: 15