Peshchery Pinego-Severodvinskoĭ karstovoĭ oblasti
An edition of Peshchery Pinego-Severodvinskoĭ karstovoĭ oblasti (1974)
sbornik stateĭ
By Alekseĭ Ivanovich Korotkov
Publish Date
1974
Publisher
Geogr. ob-vo SSSR
Language
rus
Pages
180