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article/chapitre/communication
S. Keller ; C. SCHWEIZER | 1994Over a period of 10 years, the population development of the pea midge in northern Switzerland was followed. The investigations started at about the peak of the gradation and ended after the collapse of the population. The data are supplemented [...]article/chapitre/communication
S. Keller ; C. SCHWEIZER | 1994Over a period of 10 years, the population development of the pea midge in northern Switzerland was followed. The investigations started at about the peak of the gradation and ended after the collapse of the population. The data are supplemente[...]