TY  - BOOK
AU  - 
TI  - English as a second language in Puerto Rico; linguistic principles underlying the experiment in the teaching of English as a second language in Puerto Rico: designed for elementary school teachers
PY  - 1954///
CY  - [Río Piedras, P.R.]
PB  - College of Education, University of Puerto Rico
KW  - English language
KW  - Study and teaching (Elementary)
KW  - Local
KW  - Puerto Rico
N1  - Bibliography : p. 111-121
ER  -