00000cam a22000003a 4500 UP-8027390931312556843 Buklod 20220706093024.0 m |o d | cr ||||||||||| 220706s1957 xx d r |||| u| (iLib)UPCEB-00012381433 DLC eng LB 2822.5 C7 Crosby, Muriel Estelle 1908- Supervision as co-operative action Muriel Estelle Crosby. New York Appleton-Century-Crofts [c1957] xii, 334 pages illustrations 22 cm. Includes bibliographical references. School supervision, Elementary. FO UPCEB CEBU-LAHUG LB 2822.5 C7 Book