Robinson, Raymond C. b. 1885. Progressive harmony. [electronic resource] . — Rev. ed.. — Boston, : B. Humphries, [1962, c1942]. — 271 p. : music. 24 cm. LCCN: 62052836 Subjects--Topical Terms: Harmony. LC Class. No.: MT50.R66 / H32 1962 Dewey Class. No.: 781.3