00333nam a2200121Ia 4500082002300000100003200023245002900055260004200084300000900126490004200135500000500177700002900182  a658.40388bG779.SI  aGray, John and Perry, Brian  aScientific informationb  aLondonbOxford University Pressc1975  a62p.  aScience and Engineering policy series  a  aPerry, Brian ; jt. auth.