Dokladi na plenarnite zasedanii͡a na kongresa, 5-7 oktomvri 1981 g.
By: chetvŭrti Nat͡sionalen kongres na geografite v Bŭlgarii͡a.
Publisher: Mezhdunar. dom na uchenite "Frederik Zholio Ki͡uri,"
Published: 1981
Place of publication: Varna
Language: bul
Number of pages: 70
Subjects: Geography -- Congresses.
Notes: Cover title.