Парна машина (Bulgarian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Парна машина" in Bulgarian language version.

refsWebsite

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2books.google.com

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1britannica.com

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1web.archive.org

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archive.org

((en)) Thomson, Ross. Structures of Change in the Mechanical Age: Technological Invention in the United Sates 1790 – 1865. Baltimore, MD, The Johns Hopkins University Press, 2009. ISBN 978-0-8018-9141-0. с. 34.
((en)) Cowan, Ruth Schwartz. A Social History of American Technology. New York, Oxford University Press, 1997. ISBN 0195046056.

books.google.com

((en)) Brown, Richard. Society and economy in modern Britain, 1700 – 1850. Repr. London, Routledge, 1991. ISBN 0415011213. с. 60.
„World's First Steam Driven Airplane“ Popular Science, July 1933, detailed article with drawings

britannica.com

"Heron of Alexandria". Encyclopædia Britannica 2010 – Encyclopædia Britannica Online.

dlm-ag.ch

Locomotives // Dlm-ag.ch. Архивиран от оригинала на 2016-06-23. Посетен на 25 февруари 2012.

web.archive.org

Locomotives // Dlm-ag.ch. Архивиран от оригинала на 2016-06-23. Посетен на 25 февруари 2012.

zeno.org

Röll, Freiherr von: Enzyklopädie des Eisenbahnwesens, Band 5. Berlin, Wien 1914