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Seed production system in Romania : levels and correlations for main cereal crops
Mutlak, Najah Naiem, (2013)
Creşterea producţiei de cereale, temelia dezvoltării agriculturii şi a îmbunătăţirii aprovizionării populaţiei : mit russ., franz. und engl. Résumé: The increase of the production of cereals, basis of the development of agriculture and of the improvement of population supply
Stoian, S., (1960)
Regional fluctuations in Rumanian agriculture : a case study of grain production, 1956-1966
Thomas, C., (1974)