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Chozjajstvo i byt zapadnosibirskogo krestjanstva : 17 - nacala 20 v.
Aleksandrov, V. A., (1979)
Current problems in the restructuring of the countryside
Mezhberg, Iu., (1979)
Getreidebau in Ost- und Mitteleuropa
Balassa, Iván, (1972)