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  1. By: Xerces Society.
    Publication info: Ithaca, N.Y Xerces Society
    Holding Institution: Multiple institutions
    BHL Collections: Expanding Access to Biodiversity Literature
  2. By: Powell, Jerry A. - Opler, Paul A. - Xerces Society.
    Publication info: [S.l.], The Society,
    Holding Institution: Cornell University Library
    BHL Collections: Expanding Access to Biodiversity Literature