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person:(Roberts, D.)

    Measurement of the Viscosity of Multigrade Oils in a Running Engine

    Roberts, D. C. / Lane, G. / Tims, J. M. | SAE Technical Papers | 1977

    European Test Methods For Fuel Economy Oils

    Roberts, D. C. / Bush, K. P. / Villis, T. | SAE Technical Papers | 1983

    The influence of friction modified engine oils on valve train friction

    Roberts, D. C. / Dettlaf, G. / Verein Deutscher Ingenieure | British Library Conference Proceedings | 1993

    Studies of Air-Entrainment and Foaming Problems in Automotive Engine Lubricants

    Harlow, A. / Roberts, D. C. / Co-ordinating European Council for the Developement of Performance Tests for Transport Fuels, Lubricants and other Fluids | British Library Conference Proceedings | 1993