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Selskostopanska nauka
Bulgarien / Ministerstvo na Zemedelieto i Chranitelnata … - Sofija - 1=7.1962 - 2=8.1963; 3.1964 - 13.1974,4; 14.1976 - …
Persistent link: https://www.econbiz.de/10000462415
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Canadian farm economics
1966-1991: Ottawa, Ontario : Economics Branch - 1.1966 - 18.1983,2; 19.1985 - 22.1988,1; 23.1991,1; …
Persistent link: https://www.econbiz.de/10000349775