TY  - BOOK
ED  - Puerto Rico. Departamento de Instrucción.
TI  - General characteristics that must prevail in the textbooks of Puerto Rico's educational system: working paper
PY  - 1982///
CY  - San Juan, P. R.
PB  - Department of Education
KW  - Textbooks
KW  - Puerto Rico
KW  - Local
KW  - Publication and distribution
N1  - Translation of : Caracterśticas generales de que deben prevalecer en los libros de texto del sistema educativo de Puerto Rico; Includes bibliographical footnotes
ER  -