TY - BOOK AU - Mason,Mark TI - Walk the lines SN - 9781847946539 (pbk.) U1 - 914.210486 23 PY - 2011/// CY - London PB - Arrow Books KW - Mason, Mark, KW - Subways KW - England KW - London KW - Miscellanea KW - London (England) KW - Guidebooks N1 - Includes index ER -