A study of how a child learns concepts about characteristics of liquid materials
By: Siegfried Engelmann, James J. Gallagher
Contributors: Gallagher, James J., 1926-
Publisher: Institute for Research on Exceptional Children, University of Illinois
Published: 1966
Place of publication: Urbana, Ill
Language: eng
Number of pages: 51
Subjects: Child psychology; Conservation of substance (Psychology); Learning, Psychology of
Notes: On cover: ERIC reports

Photocopy. Bethesda, Md. : Leasco Information Products