000 003370000a22001450004500
001 EST
003 621.396.969 / S72
004 M
006 m
100 _aStevens, Michael C.
245 _aSecondary surveillance radar
047 _a0-89006-292-7
650 _a<RADARES><RADARES DE VIGILANCIA><SISTEMAS DE RADAR>
999 _c19972
_d19972