Külviaeg rootsi kärbse (Oscinella frit L.) hävitustöö reguleerijana = Über den Einfluss der Saatzeit auf den Befall von Fritfliege (Oscinella frit L.)
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URL: http://www.digar.ee/id/nlib-digar:948051
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URL: http://www.digar.ee/id/nlib-digar:948051
