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por Fletcher, W.K | Hoffman, Stan J | Mehrtens, Mike B | Sinclair, Alastair J | Thomson, Ian | Society of Economic Geologists | Association of Exploration Geochemists.
por Association of Exploration Geochemists.
por Bloom, Lynda [editor] | Elliot, Ivor | Lavin, Owen | Radford, Nigel W | Seneshen, Dave | Association of Exploration Geochemists.