Mary Walton (Polish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Mary Walton" in Polish language version.

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1engineering.com

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1engineergirl.org

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engineergirl.org

Mary Walton: Inventor and Pioneer in the fight against pollution. National Academy of Sciences on behalf of the National Academy of Engineering.. [dostęp 2016-07-05]. (ang.).

engineering.com

Mary Walton. ENGINEERING.com, 2006-10-12. [dostęp 2016-07-05]. (ang.).

google.com

Improvement in locomotive and other chimneys US 221880 A. US Patent Office. [dostęp 2016-07-05]. (ang.).
MARY E. WALTON, OF NEW YORK, N. Y. ELEVATED RAILWAY. US Pantent Office. [dostęp 2016-07-05]. (ang.).

google.pl

books.google.pl

Autumn Stanley: Mothers and Daughters of Invention: Notes for a Revised History of Technology. Rutgers University Press, 1995, s. 334. ISBN 978-0-8135-2197-8. [dostęp 2016-07-05].