SCAPIN-1166: CONTROL OF RADIO COMMUNICATIONS 1946/08/29

SCAPIN-1379: CONTROL OF RADIO COMMUNICATIONS 1946/12/04

SCAPIN-1222: CONTROL OF RADIO COMMUNICATIONS 1946/09/20

SCAPIN-1283: CONTROL OF RADIO COMMUNICATIONS 1946/10/22

SCAPIN-1744/1: CONTROL OF RADIO COMMUNICATIONS 1947/08/16

SCAPIN-1744/17: CONTROL OF RADIO COMMUNICATIONS 1949/08/01

SCAPIN-1744/26: CONTROL OF RADIO COMMUNICATIONS 1950/08/04

SCAPIN-1744/29: CONTROL OF RADIO COMMUNICATIONS 1951/01/25

SCAPIN-1693/1: CONTROL OF RADIO COMMUNICATIONS 1947/05/29

SCAPIN-1165: RADIO WAVE MONITORING STATIONS 1946/08/29

SCAPIN-1592: CONTROL OF RADIO COMMUNICATIONS 1947/04/01

SCAPIN-1693: CONTROL OF RADIO COMMUNICATIONS 1947/05/20

SCAPIN-321: CONTROL OF RADIO COMMUNICATIONS 1945/11/20

SCAPIN-1500: CONTROL OF RADIO COMMUNICATIONS 1947/01/30

SCAPIN-1733: CONTROL OF RADIO COMMUNICATIONS 1947/06/14

SCAPIN-1744: CONTROL OF RADIO COMMUNICATIONS 1947/07/14

SCAPIN-1744/5: CONTROL OF RADIO COMMUNICATIONS 1948/01/26

SCAPIN-1744/9: CONTROL OF RADIO COMMUNICATIONS 1948/09/24

SCAPIN-1744/11: CONTROL OF RADIO COMMUNICATIONS 1948/11/06

SCAPIN-1744/13: CONTROL OF RADIO COMMUNICATIONS 1949/01/24

SCAPIN-1744/14: CONTROL OF RADIO COMMUNICATIONS 1949/03/17

SCAPIN-1744/25: CONTROL OF RADIO COMMUNICATIONS 1950/06/02

SCAPIN-1744/19: CONTROL OF RADIO COMMUNICATIONS 1949/10/31

SCAPIN-1744/21: CONTROL OF RADIO COMMUNICATIONS 1949/12/03

SCAPIN-1744/23: CONTROL OF RADIO COMMUNICATIONS 1950/03/15