I Mech E. Conference pub. ; I Mech E Conference pub. ; I Mech E conference pub. ; I Mech E Conference Pub. ; 1 Mech E conference pub. ; I Mech E conference pub ; I Mech Conference pub. ; I Mech E conference Pub. ; I Mech E Conference pub. 1979-1 I Mech E Conference pub., 1977-9