Stephen Heller (Simple English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Stephen Heller" in Simple English language version.

refsWebsite

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1books.google.com

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books.google.com

Clarfield, Ingrid Jacobson (2006). Burgmuller, Czerny & Hanon -- Piano Studies Selected for Technique and Musicality, Vol. 3. Alfred Music Publishing. p. 8. ISBN 073-904-066-9.