1. 01/01/1956 La bon marché gomme-mastic peut ętre faite avec l'essence ordinaire facilement et cru le caoutchouc en plaques.
  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. Ressource principale 01/01/2000 This book covers all practical aspects of growing rubber.