TY  - BOOK
AU  - Roff, W J 
TI  - Fibres, plastics and rubbers: : a handbook of common polymers 
PY  - 1956///
CY  - London: 
PB  - Butterworths Scientifics Publications, 
KW  - Industries
KW  - Rubbers
KW  - Palstics
ER  -