المؤلفون: Hèkinian, Roger

المصدر: Scientific American; Jul84, Vol. 251 Issue 1, p46, 10p, 7 Color Photographs, 2 Black and White Photographs, 5 Illustrations, 5 Diagrams, 2 Charts, 1 Graph, 2 Maps

مصطلحات موضوعية: OCEAN bottom, VOLCANOES, GEOGRAPHICAL discoveries, MINES & mineral resources, EARTH (Planet), MINERALS