6. E. I. Du Pont de Nemours and Co. Du Pont Fibers Technical Informa- 

 tion Bulletin X-197: Coated fabrics of dacron polyester and Du Pont 

 nylon. Wilmington, DE, Jun 1965. 



7. Owens Corning Fiberglass Corp. Textile fiber materials for industry. 

 Toledo, OH, 1964. 



8. E. I. Du Pont de Nemours and Co. Du Pont Fibers Technical Informa- 

 tion Bulletin X-82: Tensile- strain properties of fibers. Wilmington, 

 DE, May 1958. 



9. . Du Pont Fibers Technical Information Bulletin X-203: Light 



and weather resistance of fibers. Wilmington, DE, Apr 1966. 



10. . Du Pont Fibers Technical Information Bulletin OR-169: 



Stress-strain properties of Orion. Wilmington, DE, Feb 1970. 



11. . Du Pont Fibers Technical Information Bulletin X-56: Compara- 

 tive heat resistance of fibers. Wilmington, DE, Sep 1956. 



12. . Du Pont Fibers Technical Information Bulletin X-142: Tensile 



recovery properties of fibers. Wilmington, DE, Sep 1961. 



13. . Du Pont Fibers Technical Information Bulletin X-156: Identifi- 

 cation of fibers in textile materials. Wilmington, DE, Dec 1961. 



14. . Du Pont Fibers Information Technical Bulletin X-216: Resist- 

 ance of fibers to aqueous solutions of various salts. Wilmington, DE, 

 Apr 1967. 



15. . Du Pont Fibers Technical Information Bulletin X-215: Resist- 

 ance of fibers to organic chemicals. Wilmington, DE, Dec 1966. 



16. . Du Pont Fibers Technical Information Bulletin X-233: Properties 



of Du Pont industrial filament yarns. Wilmington, DE, Aug 1971. 



17. Encyclopedia of polymer science and technology. New York, NY, John 

 Wiley and Sons, Inc., 1972. 



18. W. J. Roff. Fibers, plastics and rubbers. New York, NY, Academic 

 Press Inc. , 1956. 



19. E. I. Du Pont de Nemours and Co. Du Pont Fibers Technical Information 

 Bulletin T-13: Properties, processing and applications of Teflon fiber. 

 Wilmington, DE, Mar 1970. 



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