00659nam a2200193Ia 4500 CTU_226868 210402s9999 xx 000 0 und d 338.47678 A425 Allen, Peter William Natural rubber and the synthetics P. W. Allen London Crosby Lockwood 1972 Contents: 1. Introduction; 2. Historical evolution; 3. Natural rubber production; 4. Synthetic rubber production;... . Ngành cao su và thương mại,Rubber industry and trade nthai Trung tâm Học liệu Trường Đại học Cần Thơ