Economic Papers
Economic Paper 55. ... clay and shale ; fives special attention to feldspar, with list of most important mines ; special data on high-grade clay and kaolin, shales and shale products ; clay tests. ... 8Ad, 66 pp., 1 pi. 5 cents. Bulletin 16. Shade Trees for North Carolina, by W. W. Ashe, 1908. 8Ad, 74 pp., 10 pi., 16 figs. ... S. Forest Service (and former Forester of the North Carolina Geological nnd Economic Survey).
| Title | : | Economic Papers |
| Author | : | |
| Publisher | : | - 1922 |
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