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https://www.unige.ch/vls/bibliography/author-bibliography/kellogg-john-harvey-1852-1943

Kellogg, John Harvey (1852-1943) - Vegan Literary Studies: An American Textual History, 1776-1900 -...

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https://nutritionfacts.org/es/topics/dr-john-harvey-kellogg-es/

Dr. John Harvey Kellogg | Health Topics | NutritionFacts.org

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