TECHNICAL SUPPLY CONDITION FOR PIRTON RINGS FOR I.E ENGINES
I.S.I: 5791-1970
TECHNICAL SUPPLY CONDITION FOR PIRTON RINGS FOR I.E ENGINES - LONDON THAMES AND HUDSON PUBLISHING COMPANY 1971 - 9
TECHNICAL SUPPLY CONDITION FOR PIRTON RINGS FOR I.E ENGINES - LONDON THAMES AND HUDSON PUBLISHING COMPANY 1971 - 9