Books by Oleg V. Pletner:
Books in the extended shelves:
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Pletner, Oleg V.: Agrarnyĭ vopros v I͡Aponii: ėkonomicheskoe issledovanie i materialy. ("Priboĭ", 1928), also by R.S.F.S.R.) Mezhdunarodnyĭ agrarnyĭ institut (Moscow (page images at HathiTrust)
Find more by Oleg V. Pletner at your library, or elsewhere.