U.S. Study Group 7, International Radio Consultative Committee (CCIR), standard frequencies and time-signals, Boulder
name: label: Collection Creator
content: Chi, Andrew
setName: label: See more items in
content: Andrew Chi Atomic Clocks Collection
label: See more items in
content: Andrew Chi Atomic Clocks Collection / Series 1: U.S. Study Group 7, International Radio Consultative Committee (CCIR) Materials
unitdate: label: Date
content: 1968-07
container: label: Container
content: Box 1, Folder 7
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials