http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Volumes for 1960- issued as Advances in electron tube techniques, v.[1]-.
Conferences for 19 -1960, sponsored by the Working Group on Tube Techniques of the Advisory Group on Electron Tubes; 1962- , by the Advisory Group on Electron Devices.