TY  - BOOK
ED  - Puerto Rico.
TI  - Lecturas para maestros de noveno grado
T2  - Its [Publicaciones, Ser. 3-no 103]
PY  - 1957/// [i.e. 1956]
CY  - Hato Rey, P.R.
PB  - [s.n.]
KW  - Social sciences
KW  - Study and teaching [Secondary]
KW  - Local
ER  -