Davis, Roger E. The organists' manual : technical studies and selected compositions : for the organ [Música impresa] / Roger E. Davis - New York [etc.] : W.W. Norton , cop. 1985 - 209 p. ; 24 x 31 cm Per a orgue Subjects--Topical Terms: OrgueEstudis i exercicisPartitures Universal Decimal Class. No.: CONS or Davis /1