TY  - MAP
ED  - Army Map Service
ED  - Instituto Geográfico Militar
TI  - [Mapa] Minas Zapayal
U1  - MP/551/A7M 21
PY  - 1967///
CY  - Washington, D.C: 
PB  - Army Map Service, 
KW  - MAPA TOPOGRÁFICO
KW  - MAPAS GEOLÓGICOS
KW  - MINAS ZAPAYAL
KW  - PIURA
N1  - "Prepared by the Army Map Service (SX), Corps of Engineers, U.S. Army Washington, D.C. Compiled in 1967 by photogrammetric methods . Aerial photography dated December 1961. Field classification 1964 by the Instituto Geográfico Militar, Lima-Perú  and the  Inter American  Geodetic  Survey. Horizontal  and vertical control by the Instituto Geográfico Militar, Lima-Perú  and the Inter-American Geodetic Survey"
ER  -