1. 01.01.1956 Preisgünstiger Gummi-Zement kann leicht mit gewöhnlichem Benzin gemacht werden und roh Laken-Gummi.
  2. 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.
  3. Key Resource 01.01.2000 This book covers all practical aspects of growing rubber.