Zamŭrsiavane na rekite v Bŭlgariia sŭs suspendirani veshtestva
Contributors: Ivanov, Kalcho Markov,; Pechinov, Dimitŭr,
Publisher: BAN
Published: 1973
Place of publication: Sofiia
Language: bul
Number of pages: 120
Subjects: Water -- Pollution -- Bulgaria
Other titles: Pollution of rivers in Bulgaria with suspended matter