00323nam a2200121Ia 4500082002000000100002600020245004900046260003400095300002700129490003500156500000500191700000500196  a515.72bB441.AS  aBelleni-Morante, Aldo  aApplied semigroups and evolution equationsb  aOxfordbClarendon Pressc1979  axv, 387p. Index, Bibl.  aOxford Mathematical monographs  a  a