00337nam a2200121Ia 4500082001700000100003900017245003800056260004900094300000600143490003200149500000500181700002900186  a514bB539.NC  aBerthelot, Pierre and Ogus, Arthur  aNotes on crystalline cohomologyb  aNew JerseybPrinceton University Pressc1978  a   aMathematical notesv no. 21  a  aOgus, Arthur ; jt. auth.