http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Monograph on radio-wave propagation in the troposphere
proceedings of Commission II on Radio and Troposphere during the XIIIth General Assembly of URSI, London, September 1961
Radio-wave propagation in the troposphere
viii, 199 pages : illustrations, diagrams ; 24 cm.