Prokof'ev, Sergej Four etudes : for piano : Opus 2 [Música impresa] / Prokofiev - New York : International Music Company , 1946 - 27 p. ; 31 cm Per a piano Publisher. No.: 853 Subjects--Topical Terms: Estudis i exercicisPianoPartitures Universal Decimal Class. No.: CONS pn Pro /29