00294nam a2200121Ia 4500008004100000100001500041245003800056260002900094300000900123650001600132942000700148999001700155190216s9999||||xx |||||||||||||| ||und||  aDemidovich 0aProblems In Mathematical Analysis  bPeace Publicationsc1960  a496p  aMathematics  cBK  c30623d30623