Survival and relief of the mountains.Leninigrad and its environs: Part I-II

Survival and relief of the mountains.Leninigrad and its environs: Part I -II / Yakovlev S.A. - Leningrad, 1926. -605: Territory content: Sk.473;VC: SK.56-57,85,97,113,117,135,153,182,185,188,191,194,209,220,451-455..Electronic copy source: TsGPB named afterV.V.Mayakovsky (St. Petersburg)