. . "Pieces for children" . . . "30 piano pieces for children, for the piano, op. 27" . "Piano pieces for children" . . . . "30 pieces for children for the piano, op. 27" . . "30 piano pieces for children : for the piano, op. 27" . "Juvenile works" . . "30 pieces for children : op. 27 : for piano" . . . "Thirty piano pieces for children" . . "Thirty pieces for children" . . "Thirty pieces for children for the piano, op. 27" . . . .