Ignatiev N.A. Geologo petrographic sketch of the area of the Malaya Laba river and its tributaries of Marcopiji and Urushten (black) in the northern Caucasus In Russian /Ignatev N.A. Geologo petrograficheskiy ocherk rayona r.Maloy laby i ee pritokov markopidzhi i urushtena ( chernoy ) na severnom kavkaze Academy of Sciences of the USSR. Moscow Academy of Sciences of the USSR. 1935. 56s. We have thousands of titles and often several copies of each title may be available. Please feel free to contact us for a detailed description of the copies available. SKUalbad28db889c7c01b9.