00421nam a2200133Ia 4500082002000000100001800020245005300038260004800091300002100139490006100160500005600221500000500277700000500282  a515.35bC794.TP  aCordes, H. O.  aThe technique of pseudo differential operatorsb  aCambridgebCambridge University Pressc1995  axii, 382p. Index  aLondon Mathematical Society lecture note seriesv v. 202  a"Purchased under NBHM grant for the year 1994-1995"  a  a