Modern plastics encyclopedia. (New York : McGraw-Hill, 1991)
Vol. issued in Oct. 1967 called: 1968; vol. issued in Oct. 1968 also called: 1968, with spine numbering as 1968-69.
Vols. for 1966-1967 issued as 2nd Sept. no. with the vol. numbering of: Modern plastics; vols. for 1968-1992 issued as 2nd Oct. no., still with the vol. numbering.
Keywords: Plastics -- Periodicals; Plastics industry and trade -- Directories