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Opit za ustavovi︠a︡vane pazanostŭta na bŭlgarskoto zemedelsko storanstvo

其他書名	Estimation of farm cash income from agricultural production in Bulgaria ....
出版	Pechatnitsa Roligrafii︠a︡, 1939
URL	http://books.google.com.hk/books?id=B6IvAAAAYAAJ&hl=&source=gbs_api