Browsing by Author "Deja, Walentyna"
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Item Methodical foundations of the division of area into natural units for the purposes of agriculture explained on the sect "O" of Great Poland Lewland(Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy w Puławach, 1967) Deja, Walentyna