Gray Percy G A : Children in care and the recruitment of foster parents.
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Gray Percy George : Private motoring in England and Wales : this report deals with a quarterly series of surveys carried out for the Ministry of Transport from October 1961 to January 1964.
Gray Peter 1953 June 13 : Air power history : turning points from Kitty Hawk to Kosovo / edited by Sebastian Cox and Peter Gray with an introduction by Richard Overy.