00317nam a2200109Ia 4500008004100000040003800041100001500079245004000094260003300134300001300167653002700180211228s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aBeard, R B 0aSpace flight and satellite vehicles  bGeorge NewnessaLondonc1957  a150p. p.  aMechanical engineering