00559nam a2200205Ia 4500 CTU_80813 210402s9999 xx 000 0 und d 668.4 K21 Kaufman, Morris Giant molecules : The technology of plastics, fibers, and rubber Morris Kaufman London Aldus Books London 1968 Plastics Popular works polymers Trọng Hải Trung tâm Học liệu Trường Đại học Cần Thơ