ISBN 9780387966885 books & textbook
Construction of Arithmetical Meanings and Strategies (Recent Research in Psychology)
Steffe, Leslie P. Cobb, Paul Sinclair, Hermine Glasersfeld, Ernst v.
Springer /1987-12-18 Paperback / 362 Pages
isbn-10: 0387966889 / isbn-13: 9780387966885
