TY - BOOK AU - Stephens,John H. TI - The Guinness book of structures: bridges, towers, tunnels, dams U1 - 624.09 PY - 1976/// CY - London PB - Guinness Superlatives KW - Civil engineering KW - History N1 - American ed. published under title: Towers, bridgesand other structures; Ill. on lining papers; Includes index ER -