... Interpretation over new areas and regions. Such work saves time and money and gives a substantial basis for new ideas." In 1977 he reported the discovery of a large and thick sequence of sedimentary rocks in southern Sudan that provide a new target...
Future Space Programs: Hearings Before the Committee on Science and ... - Página 434
por United States. Congress. House. Committee on Science and Technology - 1978 - 986 páginas
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