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Mass-Replacement of Rocks by Ores and Palaeo-Karst-Type Deposits -- Chapter 41
müssen die Unternehmen mit ihren Mitbewerbern stärker konkurrieren
im Verhältnis zu den Mythen aller Zeiten und Völker
Dantes »Convivio«
Aphid Parasites (Hymenoptera, Aphidiidae) of the Mediterranean Area O.P Mass-Replacement of Rocks by OresAn analysis of the particular topics in biological control programmes all over the world indicates an increased interest in the utilization of aphid parasites. Besides the so called traditional biological control of introduced aphids, there appears a situation which could perhaps be called a renaissance of biocontrol, i. e. the utilization of biotic agents against insecticide resistant populations of aphid pests. The rapid increase in the amount of
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