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  1. By: Barbour, Clyde D - Contreras Balderas, Salvador
    Type: Article
    In: Proceedings of the Biological Society of Washington
    Volume: 81
    Date: 1968
    Page Range: 101--108
    Publication Info: Washington, Biological Society of Washington,
  2. By: Ruiz-Campos, Gorgonio - Contreras Balderas, Salvador - Andreu-Soler, Asunción - Varela Romero, Alejandro - Campos, Ernesto
    Type: Article
    In: Revista mexicana de biodiversidad
    Date: 2012-03-01
  3. By: Contreras Balderas, Salvador - Verduzco-Martínez, Jorge
    Type: Article
    In: Transactions of the San Diego Society of Natural History
    Volume: 18
    Date: 1977
    Page Range: 259--266
    Publication Info: [San Diego], The Society, 1905-1989
  4. By: Valdez-Moreno, Martha E - Contreras Balderas, Salvador
    Type: Article
    In: Proceedings of the Biological Society of Washington
    Volume: 116
    Date: 2003
    Page Range: 341--355
    Publication Info: Washington, Biological Society of Washington,