Bestemmelse af aeg-og puppeantal af gulerodsfluen (Psila rosae F.) ved indsamling af jordprøver - Estimation du nombre d'œufs et de pupes de P. r. par échantillonnage au sol - Estimation of the number of eggs and pupae of the carrot fly by means of soil sampling

Nielsen, J.V.

Tidsskr. Nor. Landbruk 87(4): 379-387

1983


Accession: 072968849

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