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  1. Descriptio systematica animalium Belgii septentrionalis, adjectis synonymis nec non locis in quibus reperiuntur / auctore R. T. Maitland.
    By: Maitland, Robert T. - Hoeven, Jan van der,
    Publication info: Leyden :C.C. van der Hoek,1851.
    Contributed by: Harvard University, MCZ, Ernst Mayr Library
    BHL Collections: Ernst Mayr Library of the MCZ, Harvard University
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