TY - BOOK TI - Exam success: : plumbing and heating 6189-11 and 6189-21 T2 - Exam success SN - 9780851931944 (pbk.) : PY - 2011/// CY - London PB - City & Guilds KW - Plumbing KW - Examinations, questions, etc KW - Heating KW - House and Home KW - eflch N1 - Includes bibliographical references; Specialized ER -