资源 标记: Rubber
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This report examines the state of knowledge and the future promise of guayule Parthenium argentatum Gray, a little-know shrub native to the desert of southwest Texas and nothern Mexico that was a commercial source of natural rubber during the first half of this century.
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关键资源 2000-01-01 This book covers all practical aspects of growing rubber.
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1956-01-01 Inexpensive rubber cement can be made easily with ordinary gasoline and raw sheet rubber.