Secondary-electron-emission Properties of Conducting Surfaces with Application to Multistage Depressed Collectors for Microwave AmplifiersRalph. Forman1977
Surface Studies of Thermionic Cathodes and the Mechanism of Operation of an Impregnated Tungsten CathodeRalph. Forman1976
The Founding of the Roman Catholic Church in Melanesia and Micronesia, 1850-1875Ralph M. Wiltgen2008PDF43 MB
Electrical Properties of Xenon-filled Thermionic Diodes in Radiation Field of a Nuclear ReactorRalph Forman1968