América-Central-Historial | El salvador-Política y Gobierno, 1979-1992 | Guatemala política y gobierno, 1945-1985 | Nicaragua política y gobierno, 1979-1990 | Entrevistas a Revolucionarios Centroamérica 1 América-Central-Historial | Manuscritos en el salvador | indígenas en el salvador
 | Pipiles | sacrificios humanos
 | Arqueología indígena | Nombres geográficos-historia-congresos, conferencia 1 Case histories and prediction of volcanic eruptions | Geochmical methods | Geophysical methods | History of volcano observations | Volcanic zoning 1 Clasification | Exploration history | Main geological characteristics | Review genetic models | To define the criterio for exploration 1 Controls on ore deposition | Igneous rocks | Local geologic history | Local geology | Location and Accessibility | Location of la negra mine | Regional geology 1 Deformation sprozesse in den anden | El arco magnético de la Cordillera de la Costa | History of geological investigation in the Caribbean region | Magmatism of the eastern Red Sea margin in the northern part | of Yemen | Paleoproterozoic | Principales aspectos ígneos 1 Geologic Setting | History of Mining | List of Illustrations | Localition | Rock Units | Topography and Drainnage 1 más ... Geology of Construction Materials | Radiosactive Waste Disposal and Geology | Vatastrophic Episodes in Earth History 1 History of Paleocuurrent Investigations up to 1963 | Fabrics and Geophysical Properties up to 1963 | Cross- Bedding and Ripple Marks | Linear Structures up 1963
 | Dispersal and Current Systems 1 History of minig | Geology | Description of ore deposit types | Geochemistry 1 John nash-biography-history 1 MASAYA VOLCANO NATIONAL PARK | FLORA and FAUNA | A BRIEF HISTORY 1 México-Historial local 1 Nominal-scale statistics | History of Mining | Data interpretation | Flow magnitud and frequency 1 The Acceleration of History | Facing Up to the Risks of Climate | Forging a Sustainable Water | Understanding the Threat of Bioinvasions 1 The nature and history of geochemistry | Note on natural resources | How to this encyclopedia | Absolute age determination see geochronometry 1 menos ...