Publisher: Washington, D.C. : National Science Teachers Association, c1983.
Description: xiv, 46 p. ; 28 cm.
Notes: National Science Foundation Grant No. SER-8160347; Bibliography: p. 43-46; Clarion University Faculty Publication (Kenneth R. Mechling, 1966-1998)
Series: Project for Promoting Science Among Elementary School Principals. Handbook ; I.
