Different language forms (22.3B1 & 24.3A1)

Choose the language of most of the works for a person, or the official language for a corporate body. In cases of doubt, or insufficient information, reference sources may need to be consulted.

Examples:

100 10 Franck, Adolphe,‡d1809-1893
400 10 Franck, Adolph,‡d1809-1893
670 The kabbalah, 1926:‡bt.p. (Adolph Franck)
670 LC in RLIN, July 27, 1989‡b(hdg.: Franck, Adolphe, 1809-1893; usage: Adolph Franck) [usage is not French]
670 Dict. de biog. fr.‡b(Franck, Adolphe, b. 9 Oct. 1809; d. 13 Apr. 1893)

110 20 Nihon Ryutai Rikigakkai
410 20 Japan Society of Fluid Mechanics
670 Fluid dynamics research, Aug. 1986:‡bt.p. verso (Japan Society of Fluid Mechanics)
670 Zenkoku shiken kenkyu kikan meikan, 1985/86:‡bp. 2356 (Nihon Ryutai Rikigakkai; The Japan Society of Fluid Mechanics; est. 1968)