TY  - BOOK
ED  - United States
TI  - Block statistics = Estadísticas por manzanas
T2  - Census of Housing
PY  - 1960///-
CY  - Washington
PB  - U.S. Govt. Print. Off.
KW  - Housing
KW  - Puerto Rico
KW  - Statistics
KW  - Local
KW  - Mayagüez (P.R.)
KW  - San Juan P.R
KW  - Ponce (P.R.)
N1  - Title varies : City blocks, 1960
ER  -