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  1. Chiggers of the genus Pseudoschoengastia (Acarina: Trombiculidae) from Costa Rica
    By: Geest, Julius C. - Loomis, Richard B.
    Type: Article
    In: Contributions in science
    Volume: 150
    Date: 1968
    Page Range: 1--49
    Publication info: Los Angeles, Calif :The Museum,[1957]-
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