00317nam a2200109Ia 4500008004100000040003800041100002200079245003700101260003500138300001600173653001800189211215s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aBaker, Robert M C 3aAn introduction to astrodynamics  bAcademic PressaNew Yorkc1960  axiv,358p p.  aAstrodynamics