TY  - BOOK
AU  - Dolciani,Mary P.
TI  - Modern school mathematics: pre-algebra 
AV  - QA107 .M6 1973
PY  - 1973///]
CY  - Boston
PB  - Houghton Mifflin
KW  - Matemáticas-Enseñanza
KW  - Algebra-Study and teaching (Elementary)
KW  - Aritmética-Enseñanza
N1  - Fondo: José Eduardo Romero Ramírez
ER  -