1. Anon., “Nylon, The First 25 Years,” Brochure of E. I. Du Pont de Nemours and Co., 1963.
2. R. Adams in Ref. 10, p. XV.
3. M. Kaufman, “The First Century of Plastics,” Iliffe, London, 1963.
4. H. Mark, Amer. Scientist, 72, 156 (1984).
5. G. M. Kline, Mod. Plas. 57 (2), 66 (Feb., 1980 ).