PARKHURST , HELEN EDUCATION ON THE DALTON PLAN - G. BELL AND SONS LONDON 1923 - xvi , 215 p. 20 cm Nat. Bib. Agency Control No.: 379 PAR Subjects--Topical Terms: Government policies on educationඅධ්යාපනය පිළිබද රාජ්ය ප්රතිපත්ති Dewey Class. No.: 379 / PAR