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  1. Ardea.
    By: Nederlandsche Ornithologische Vereeniging. - Nederlandse Ornithologische Unie.
    Publication info: Amsterdam, etc. :Nederlandse Ornithlogische Unie, etc.
    Holding Institution: University Library, University of Illinois Urbana Champaign
    View Book
  2. Ardea.
    By: Nederlandsche Ornithologische Vereeniging. - Nederlandse Ornithologische Unie.
    Publication info: Amsterdam, etc.,Nederlandse Ornithlogische Unie, etc.
    Holding Institution: American Museum of Natural History Library
    View Book