PORKESS ROGER, HOLLAND DAVID, GRAHAM TED, BERRY JOHN. MECHANICS 1 JOHN BERRY, TED GRAHAM, DAVID HOLLAND, ROGER PORKESS. - 1ST - LONDON HODDER AND STOUGHTON 1993 - 169P. ILL. PBK ISBN: 0340571721 LC Class. No.: QA11.B4 1993