A LIFE of de Saussure, author of the “Voyages dans les Alpes,” has long been desired, and that has now been supplied by an Englishman singularly fitted for the task, Dr. Douglas Freshfield ...
Numbers of workers of Vespula pensylvanica (Saussure) (western yellowjacket) and V. atropilosa (Sladen) trapped with heptyl butyrate in Washington increased with greater release of the attractant from ...
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