Jankó keyboard (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Jankó keyboard" in English language version.

refsWebsite

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1books.google.com

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archive.org

Loesser, Arthur (1954). Men, Women, and Pianos: A Social History. New York: Simon and Schuster. pp. 567–568. ISBN 9780486265438.

books.google.com

Dolge, Alfred (1911). Pianos and Their Makers (book). Vol. 1 ((fulltext on Google Books link) ed.). Covina/Dover. pp. 78–83. ISBN 0-486-22856-8.

worldcat.org

search.worldcat.org

Naragon, Kristine (1977). The Jankó Keyboard. p. 25. OCLC 3805023.