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Wallace, John Gilbert.

Stages and transition in conceptual development: an experimental study [by] J. G. Wallace. - Slough, National Foundation for Educational Research, 1972. - 247 p. illus., form. 22 cm.

Illus. on lining papers.

Bibliography: p. [237]-243.

ISBN: 0901225606 �3.00

LCCN: 72185450

Nat. Bib. No.: B72-06339

Subjects--Topical Terms:
Learning, Psychology of.
Concepts.

LC Class. No.: LB1062 / .W3

Dewey Class. No.: 155.4/23