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Publisher
- Central Intelligence Agency2
- The Office2
- Bundesanstalt für Geowissenschaften und Rohstoffe ; Geo Center1
- Central Intelligence Agency : For sale by the Supt. of Docs., U.S. G.P.O.1
- El Gobierno, Waterlow & Sons)1
- G. Kraetzer Lith1
- National Tourist Board of El Salvador ; Printed in U.S.A. Poole Bros1
- República de El Salvador, Ministerio de Obras Públicas, Instituto Geográfico Nacional Ingeniero Pablo Arnoldo Guzmán1
- Texaco Caribbean Inc1
- The Center ; USGS Branch of Distribution, Box 25286, distributor1
- The Society1
