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EH.Net Encyclopedia: The International Natural Rubber Market, 1870-1930 |
 | | Schurz, William Lytle, O. D Hargis, Curtis Fletcher Marbut, and C. B Manifold. |
 | | Rubber Production in the Amazon Valley by William L. Schurz, Commercial Attaché, and O.D. Hargis, Special Agent, of the Department of Commerce, and C.F. Marbut, Chief, Division of Soil Survey, and C.B. Manifold, Soil Surveyor, of the Department of Agriculture. |
 | | See, for example, the explanation of tapping in the October 1, 1910 issue, or “The Present and Future of the Native Havea Rubber Industry” in the January 1, 1913 issue. |
| www.eh.net /encyclopedia/article/frank.international.rubber.market (4213 words) |
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