| УДК |
Аннотация: Forest entomology is that branch of the biological sciences which deals with insects in their relation to forests and forest products. The majority of species treated in this book have a direct effect either upon the trees themselves or upon the products derived from the trees. Some, however, have an indirect effect in that they are predaceous or parasitic and prey upon the tree pests. In addition to these two types there is a multitude of insects entering into the forest economy that are neither pests of trees nor parasitic or predatory enemies of those pests.
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