00461nam a2200169Ia 4500003000900000008004100009040001600050080002000066100001900086245007500105250001200180260003200192300001500224650001900239650001000258700002300268IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a621.396.96bPEN  aPenrose, H. E. 0aPrinciples and practice of radarcH. E. Penrose and R. S. H. Boulding.  a3rd ed.  aLondonbGeorge Newnesc1950  axii, 708p.  aNASA Thesaurus  aRadar  aBoulding, R. S. H.