Chovekŭt, prirodata i shumŭt
By: Khristo Apostolov.
Publisher: Nauchno-tekhn. sŭi͡u︡zi v Bŭlgarii͡a︡, T͡S︡entr. sŭvet, Kom-t za borba s shuma
Published: 1979
Place of publication: Sofii͡a︡
Language: bul
Number of pages: 18