00893cam a2200265   45000010008000000030008000080050017000160080041000330100017000740350023000910350017001140400026001310500016001570820019001731000041001922450046002332600047002793000042003264900027003685000142003956500026005376500025005636500011005888300028005992719428BD-DhUL20150113105359.0870306s1947    enk           000 0 eng    a   48002428   a(OCoLC)ocm15279273  a(NNC)2719428  aDLCcBD-DhULdBD-DhUL0 aTL695b.S55  a629.13257bSMR1 aSmith, R. A.q(Robert Allan),d1909-10aRadio aids to navigation.cby R. A. Smith  aCambridge [Eng.]bUniversity Press,c1947.  axi, 114 p. :billus., maps. ;c22 cm.1 aModern radio technique  a"The material for this book was prepared in the first instance as a contribution to the Ministry of Supply (Air) Scientific war records." 0aRadio in aeronautics. 0aRadio in navigation. 0aRadar. 0aModern radio technique.