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The economic Possibilities of Aeroplane Dusting against Forest Insects

Published online by Cambridge University Press:  10 July 2009

Ivar Trägårdh
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Extract

Ten years have now elapsed since the first dusting operations by aeroplanes were carried out against forest insects in Germany. It is therefore a tempting task to try to review the development of this modern method of fighting forest insects and to formulate, at least tentatively, some fundamental conceptions regarding the specific conditions which must be fulfilled before this method is resorted to.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 26 , Issue 4 , December 1935 , pp. 487 - 495
Copyright
Copyright © Cambridge University Press 1935

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