Connections 7 -- The Long Chain: Burke, James, 1936-

Connections 7 -- the Long Chain; Search Educational Film Journals at Media History Project for references to this film; Summary; Traces the connection between 17th century mercantile competitio./iahe development of a coal - tar pitch to protect ship hulls, and the creation of waterproofed clothing, gaslight lamps, and nylon. Number 7 of the series.