00339nam a2200121Ia 4500008004100000040003800041100002000079245004500099250000600144260003900150300001200189653001600201211214s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aPfeiffer , John 0aChanging universe: story of new asronomy  a1  bVICTOR GOLLANCZ LTD.aLondonc1956  a237p p.  aMathematics