Bulgarian discoveries
By: Ivanka Relyovska ; [translated by Sofia Press].
Publisher: Sofia Press
Published: 1987
Place of publication: Sofia, Bulgaria
Language: eng
Number of pages: 54
Subjects: Inventions -- Bulgaria.
Other titles: Otkrito v Bŭlgarii͡a︡.
Notes: Title in colophon: Otkrito v Bŭlgarii͡a︡.