The growth of basic mathematical and scientific concepts in children

by K. Lovell; foreword by Bärbel Inhelder
Bok · Engelsk · 1966

Utgitt	London : University of London Press , 1966
Omfang	158 s. : ill.
Utgave	5th ed.
Emner	Conservation (Psychology) Number concept in children matematikk undervisning
ISBN	0340087994