01689oem 2200457Ka 450 991069619510332120070828151628.0(CKB)5470000002374856(OCoLC)48136030(EXLCZ)99547000000237485619980310d1999 da engb||||||||||||||aa|||||dcrdrdacontentcrdamediacrrdacarrierGeology and resource assessment of the Venezuelan Guayana Shield at 1:500,000 scale[electronic resource] a digital representation of maps published by the U.S. Geological Survey /by Paul G. Schruben ... [and others]Reston, VA. :U.S. Geological Survey,1999.1 electronic map HTML fileDigital data series ;46Title from HTML introductory screen (viewed on Aug. 28, 2007)."Contains vector-based digital maps of Venezuela[n] Guayana Shield originally published as paper maps in 1993 USGS Bulletin 93-2062."Geology and resource assessment of the Venezuelan Guayana Shield at 1GeologyVenezuelaMapsMineralsVenezuelaMapsGuiana HighlandsMapsRemote-sensing maps.lcgftMaps.lcgftGeologyMineralsSchruben Paul G1404281MNUMNUOCLCQGPOBOOK9910696195103321Geology and resource assessment of the Venezuelan Guayana Shield at 1:500,000 scale3478617UNINA