Gregorio, Herman C. <br/><br/>School administration and supervision Herman C. Gregorio  - Quezon City:  Garotech Publishing;  [1961]  - xiv 550 pages  22 cm <br/><br/>Includes Index <br/><br/><label>ISBN: </label>9716711090 <br/><br/><label>LC Class. No.: </label>LB 2955  / .G821 1961