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  1. Fauna silurica de Portugal : descripção de uma fórma nova de trilobite Lichas (Uralichas) Ribeiroi / por J. F. N. Delgado.
    By: Delgado, J. F. N. (Joaquim Filippe Nery), - Serviços Geológicos de Portugal.
    Publication info: Lisboa :Typ. da Academia real das sciencias,1892.
    Holding Institution: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
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