19 เมษายน (Thai Wikipedia)

Analysis of information sources in references of the Wikipedia article "19 เมษายน" in Thai language version.

refsWebsite

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2books.google.com

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books.google.com

William Shurtleff; Akiko Aoyagi (4 November 2014). Early History of Soybeans and Soyfoods Worldwide (1024 BCE to 1899):: Extensively Annotated Bibliography and Sourcebook. Soyinfo Center. p. 273. ISBN 978-1-928914-69-3.
A New Historical and Commercial System of Geography: Containing a Comprehensive History and Description of the Present State of All the Kingdoms of the World... S. Russell. 1806. p. 2.