In Russian. Palanjyan, Suren Ashotovich. Petrology of Hyperbasites and Gabbroids of the Sevan Ridge. Yerevan: Publishing House of the Academy of Sciences of the Armenian SSR, 1971. Petrologiya giperbazitov i gabbroidov Sevanskogo khrebta. In Russian /Petrology of Hyperbasites and Gabbroids of the Sevan Ridge . All images are for identification of editions only. Several books of the same edition may be available. Please feel free to request photos of available books. SKU7316530