Titlebook: Biological Control; Proceedings of an AA C. B. Huffaker (Professor of Entomology and Entomo Conference proceedings 1971 Springer Science+Bu

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巧办法

Kindlicher Alltag und soziale Unterschiede,ed cotton fields, we find tongues in trees, books in running brooks, sermons in stones and good in everything, for the defoliated forests and rotten bolls tell a story of disrupted nature. To paraphrase Shakespeare here would be appropriate, for it was in “As You Like It” that Shakespeare reflected

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Kinder, Kindheiten und Kindheitsforschungeographical areas where climatic and edaphic factors favor a diverse and productive flora and fauna. The eastern United States generally is such an area. The southeastern states, in particular, are characterized by a wide diversity of biotic communities, and the agro-ecosystems are comprised of a ve

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慎重

TRACE

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Datenbasis und methodisches Vorgehenuitable in its direct effects on development, survival, and reproduction of the new natural enemy; it must also be suitable in its indirect effects on life cycle synchrony between enemy and host. (Flanders, 1940; Elton, 1958).

MAL

Zum Gegenstand der Untersuchungation ecology. Although natural enemies have been successfully used for the “biological control” of insect pests, the properties of these animals have neither been sufficiently well known beforehand to forecast the degree of success, nor have studies after the introduction revealed the mechanisms involved.

老人病学