00854nam a2200241Ia 4500 113302 BIBL 20160527183546.0 740514s1967 dcu b 00010aeng 67008951 //r82 EVLG Q181 .H25 507 507 H255 Harbeck, Mary Blatt. 232823 Local A sourcebook for science supervisors. Mary Blatt Harbeck, editor. Washington National Science Supervisors Association, A Section of the National Science Teachers Association [1967] 144 p. 23 cm. Later ed. (c1976) entered under title: 2nd sourcebook for science supervisors. Includes bibliographies. Science teachers 166920 Local Science Study and teaching Supervisor. 166868 Local 94646 94646 0 0 0 507_000000000000000_H255 0 evl 29511 10 10 1 2016-05-27 173194 0 507 H255 80000001219578 2016-05-27 00:00:00 r:113302 z:NCC:D 6