Ekologii͡a︡ i dukhovno razvitie
By: A. Kŭtov, D. Filipov, T. Bozhinov.
Contributors: Filipov, Dimitŭr.; Bozhinov, Todor.
Edition: 1. izd.
Publisher: Partizdat
Published: 1989
Place of publication: Sofii͡a︡
Language: bul
Number of pages: 126
Notes: Includes bibliographical references.