Society of Plastics Engineers.:Divisional Technical Conference, 1975, Hudson, Ohio;Additives-their effect on process parameters & product performance.s. n. ],1975.
Society of Plastics Engineers.SPE Pacific Technical Conference (1978 : San Francisco):(PACTEC III`78) : Practical plastic engineering and design.,n. d..
Society of Plastics Engineers,Annual Technical Conference of the Soc..Annual technical conference of the Soc. ( 18th : 1962 : Pittsburgh ).v.8.s. n.],1962.