TY  - BOOK
T1  - Meeting Individual Differences in Arithmetic
T2  - Bureau of laboratory schools. Publication ;
PP  - Austin
PB  - The University of Texas
YR  - 1959
UL  - http://vufind10-pruebas.sigbunlp.bibliotecas.unlp.edu.ar/Record/dun.156863
OP  - 184
ER  -