Reki Permskoĭ oblasti
Subtitle: rezhim, resursy, prognozy, problemy
By: A. Komlev, E. Chernykh.
Contributors: Chernykh, E.
Publisher: Permskoe knizhnoe izd-vo
Published: 1984
Place of publication: Permʹ
Language: rus
Number of pages: 212
Notes: Includes bibliographical references (212-[213]).