00506nam a2200157Ia 4500003000900000008004100009040001600050080001300066100001900079245010000098260004500198300002300243650004100266650001700307700002400324IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a524bBUR  aBurgers, J. M. 0aProblems of cosmical aerodynamicscBurgers, J. M.                                                aOhiobCentral Air Documents Officec1949  a[various pagings.]  aAstronomy and Astrophysics Thesaurus  aAstrophysics  aVan De Hulst, H. C.