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2. Paleozoic origin of the cycads
3. Pegmatite investigations in Colorado, Wyoming and Utah, 1942-1944
4. Petroleum potential of wilderness lands in Arizona
5. Petroleum potential of wilderness lands in California
6. Petroleum potential of Wilderness Lands in Colorado
7. Petroleum potential of Wilderness Lands in Idaho
8. Petroleum potential of Wilderness Lands in Montana
9. Petroleum potential of Wilderness Lands in Nevada
10. Petroleum potential of wilderness lands in New Mexico
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