Nauchni osnovi za uvelichavane produktivnostta na murovite gori
By: Nikola Penev
Publisher: Izd-vo na Bŭlgarskata akademii͡a na naukite
Published: 1966
Place of publication: Sofii͡a
Language: bul
Number of pages: 190
Notes: At head of title: Akademii͡a na selskostopanskite nauki. Institut za gorata.

Title on added t. p. in German; German and Russian summaries.

In Cyrillic characters.

Bibliography: p. 169-174.