base₃

Sources

• NASH 1968 21

  NASH, Rose. (1968) Multilingual Lexicon of Linguistics and Philology: English, Russian, German, French. Coral Gables, FL: University of Miami Press. 

• PEI & GAYNOR 1954 27 (base of comparison (PH))

  PEI, Mario A. & GAYNOR, Frank. (1954) A Dictionary of Linguistics. New York : Philosophical Library.