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Wykazano znaczenie nawadniania dla intensyfikacji produkcji roślinnej w NRD oraz sposób organizacji systemu deszczowania. Przedstawiono komputerowy system tzw. IBSB-2, który służy do obliczania i programowania potrzeb deszczowania na terenie NRD.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.