Forsok med tidlig saing av varkorn i sondre Ostfold 1974-1976 | Experiments with early planting of spring cereals [oats, barley] in southern Ostfold County, Norway 1974-1976 [Yields] | Experiments with early planting of spring cereals in southern Ostfold County, Norway 1974-1976

الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)

المعلومات البيبليوغرافية