00559nam 2200169z- 450 9910690377803321(CKB)5470000002337512(EXLCZ)99547000000233751220230503c1997uuuu -u- -engArmy management of the electromagnetic spectrum : managementHeadquarters, Dept. of the ArmyArmy management of the electromagnetic spectrum BOOK9910690377803321Army management of the electromagnetic spectrum : management3179236UNINA