共 50 条
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- [2] OBSERVATIONS OF EARTHS RESOURCES PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1969, 308 (1493): : 173 - &
- [5] DISCUSSION OF OBSERVATIONS OF EARTHS RESOURCES PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1969, 308 (1493): : 182 - &
- [8] SURVEYS OF EARTHS RESOURCES AND ENVIRONMENT BY SATELLITES MINING CONGRESS JOURNAL, 1975, 61 (09): : 28 - 32
- [9] RESOURCES AND SEPARATION OF RARE EARTHS. Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, 1987, 34 (09): : 453 - 460
- [10] NEW GEOLOGICAL TECHNIQUES IN SEARCH FOR EARTHS RESOURCES TEXAS JOURNAL OF SCIENCE, 1971, 22 (2-3): : 277 - &