Harlen, F. Short chain branching in hydrocarbon polymers : gelation in addit ion to polymerization / F. Harlen [et al.]. - Manchester : Metropolitan-Vickers Electrical Co. Ltd , 1956. - 9 p. : ill. ; 28 cm. - Research series ; No.22 . Includes bibliographical references. Subjects--Topical Terms: Polyethylene--------Polymers--------Polymerization--------