Razvitie na chernata metalurgii͡a︡--svetovni tendent͡s︡ii i izvodi za NRB
By: Petko Pavlov.
Edition: 1. izd.
Publisher: Dŭrzh. izd-vo "Tekhnika"
Published: 1988
Place of publication: Sofii͡a︡
Language: bul
Number of pages: 140
Subjects: Metallurgy -- Bulgaria -- History.; Iron -- Metallurgy -- History.; Steel -- Metallurgy -- History.
Notes: Summary in English and Russian.