Sbornik dokladi
By: Postoi͡a︡nna konferent͡s︡ii͡a︡ na inzhenerite ot i͡u︡go-iztochna Evropa, Kopisee.
Publisher: T͡S︡entr. sŭvet na nauchno-tekhn. sŭi͡u︡zi v Bŭlgarii͡a︡, Kom-t za borba protiv shuma
Published: 1975
Place of publication: Varna
Language: bul
Number of pages: 401