TY  - BOOK
ED  - Puerto Rico.
TI  - Comunicaciones: Communications
PY  - 0000///19-
CY  - [San Juan, P. R.]
PB  - División de Análisis de Salarios y Estudios Ocupacionales
KW  - Communications and traffic
KW  - Puerto Rico
KW  - Statistics
KW  - Local
KW  - Labor
N1  - Includes appendices and explanatory notes; Part of text in English
ER  -