William Curtis (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "William Curtis" in Spanish language version.

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ipni.org

umass.edu

library.umass.edu

  • «William Curtis». Hierbas e insectos. University of Massachusetts. Archivado desde el original el 20 de julio de 2008. Consultado el 1 de septiembre de 2007. «The scope of natural history changed dramatically in 18th century England under the influence of published works directed at amateurs.» 

web.archive.org

  • «William Curtis». Hierbas e insectos. University of Massachusetts. Archivado desde el original el 20 de julio de 2008. Consultado el 1 de septiembre de 2007. «The scope of natural history changed dramatically in 18th century England under the influence of published works directed at amateurs.»