THE FORMATION OF SCIENTIFIC ORGANIZATION OF AGRICULTURE IN THE SAMARA REGION IN THE EARLY XX CENTURY - PDF (Russian)
Copyright (c) 2012 Syukov A.V.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Copyright (c) 2012 Syukov A.V.
This work is licensed under a Creative Commons Attribution 4.0 International License.