TY - BOOK AU - Open University A281 TI - Technology and change course (1750 - 1914) : Videotape 6. The American steel industry U1 - HD/9515.6 PY - 1985/// CY - Milton Keynes PB - Open University KW - Steel industry and trade -- United States. KW - Technological change N1 - Abstracts Programme notes available Minutes of play 25 ER -