00275nam a2200097Ia 4500008004100000040003800041100001600079245004300095260002300138653001600161211228s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aDufay, Jean 0aIntroduction to astrophysics the stars  bGEORGE NEWNES LTD.  aMATHEMATICS