Вакуум (Bulgarian Wikipedia)

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

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archive.org

Campbell, Jeff. Speed cleaning. 2005. ISBN 1594862745. с. 97. Note that 1 inch of water is ≈0.0025 atm.
How to Make an Experimental Geissler Tube, Popular Science monthly, February 1919, Unnumbered page, Scanned by Google Books.

Squire, Tom. U.S. Standard Atmosphere, 1976 // Thermal Protection Systems Expert and Material Properties Database. 27 септември 2000. Архивиран от оригинала на 15 октомври 2011. Посетен на 23 октомври 2011.

Squire, Tom. U.S. Standard Atmosphere, 1976 // Thermal Protection Systems Expert and Material Properties Database. 27 септември 2000. Архивиран от оригинала на 15 октомври 2011. Посетен на 23 октомври 2011.

Chambers, Austin. Modern Vacuum Physics. Boca Raton, CRC Press, 2004. ISBN 0-8493-2438-6. OCLC 55000526.
Barrow, John D. The book of nothing: vacuums, voids, and the latest ideas about the origins of the universe. 1st American. New York, Pantheon Books, 2000. ISBN 0-09-928845-1. OCLC 46600561. (на английски)