Glossary of terms and symbols in thermionic conversion. - 115 pages : illustrations ; 27 cm Index of terms in English, French, and Russian. LCCN: 72179059 Nat. Bib. No.: F*** Subjects--Topical Terms: Thermionic converters--Dictionaries--PolyglotDictionaries, Polyglot LC Class. No.: TK2955 / .O74 1971