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Proceedings of the National Academy of Sciences of the United States of America Process Explorer Proceratophrys Procesa del Carmen Sarmiento Proceratophrys boiei Proceno Procelsterna cerulea Proceratophrys bigibbosa Procellaria Proceratophrys brauni

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WikiPedia: Proceedings_of_the_National_Academy_of_Sciences_of_the_United_States_of_America http://lccn.loc.gov/16010069 http://www.jstor.org/journals/00278424.html http://www.pnas.org/ http://www.pnas.org/content/by/year http://www.pnas.org/content/current //www.worldcat.org/issn/0027-8424 //www.worldcat.org/issn/1091-6490 //www.worldcat.org/oclc/43473694 https://clarivate.com/products/journal-citation-re... https://www.newspapers.com/clip/28043583/discovery...