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Introduction; relation of parasites to host; stages of development; summary; 
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Relation of parasite to host; development of stages of parasite body in 
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THE ORIGN OF MIXED BROODS IN POLYEMBRYONIC HYMENOPTERA. Ann. Ent. 
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General discussion; report on studies of five species; summary and dis- 
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Safe sowing date between October 20 and 380. 
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