Books by Ricardo Valls
Quality Assurance and Quality Control for the Field Work A Guideline for Private and Public Companies
Ricardo Valls, Ricardo a Valls P Geo
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The Role of Manganese As a Controller for Gold Mineralization in the Serpentinites of the San José de Las Malezas Gold-Quartz Deposit in Santa Clara, Villa Clara, Cuba
Ricardo Valls, Ricardo a Valls P Geo
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Petrographic and Correlation Study of the San José de Las Malezas Quartz-Gold Deposit Santa Clara, Villa Clara, Cuba
Ricardo Valls, Ricardo a Valls P Geo
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Geology and Geochemical Evolution of the Ophiolitic Belts in Guatemala. A Field Guide to Nickel Bearing Laterites.
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The Geology and Gold Potential of the Motagua Basin in Guatemala, Central Americ
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The Geology and Lineament Analysis of the Baja Verapaz District in Guatemala
Dr Vadim Galkine P Geo, Ricardo Valls, Ricardo a Valls P Geo, Vadim Galkine
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The Geology and Mineral Resources of Northern Haiti.
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The Geology and Mineral Resources of Northern Haiti.
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La Investigación Científica en la Geología Y en Otras Ciencias de La Tierra
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