Issues : Abbreviated octaves' notation

b. 83

composition: Op. 25 No 12, Etude in C minor

C1-C in FC (→GE), FE & EE2 (→EE3)

C in EE1

..

The missing bottom C1 in EE1 is most probably a mistake, corrected in EE2 (→EE3), perhaps on the basis of FE.

category imprint: Differences between sources

issues: EE revisions , Errors in EE , Abbreviated octaves' notation