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- catalog contributor b2986707.
- catalog created "1978".
- catalog date "1978".
- catalog dateCopyrighted "1978".
- catalog description "Includes bibliographical references.".
- catalog extent "126 p. ;".
- catalog issued "1978".
- catalog language "bul".
- catalog publisher "Sofii︠a︡ : Zemizdat,".
- catalog spatial "Bulgaria.".
- catalog subject "Agriculture Economic aspects Bulgaria.".
- catalog subject "HC403.Z9 S67".
- catalog subject "Socialist competition Bulgaria.".
- catalog title "Sot︠s︡ialisticheskoto sŭrevnovanie v selskoto stopanstvo : [rŭkovodstvo] / Dimitŭr Petkov.".
- catalog type "text".