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1by Kovachevski, Ivan
Published 1965Sofi︠i︡a : Izd-vo na Bŭlgarskata Akademi︠i︡a na naukite, 1965.79 p. : ill. ; 24 cm.Subjects: “...Mosaic diseases....”
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2Published 1958Sofii︠a︡ : Red. na selskostopanskite spisanii︠a︡, -1958.v. : ill. ; 24 cm.Subjects: “...Plant diseases Periodicals....”