Milligan, Ralph. Scales, chords and arpeggios : : basic piano technics / [electronic resource] / by Ralph Milligan.. — New York : : M. Witmark & Sons.,, c1960.. — 40 p. of music ; 30 cm. "Major and minor keys." Publisher. No.: 21599-38. M. Witmark Subjects--Topical Terms: Piano--Studies and exercises. LC Class. No.: MT225.M55 / S3 1960