- Bookseller's ticket on verso frontwr.

= With AUTOGRAPH SIGNED DEDICATION on title. Extremely rare, de Broglie usually refused to sign his work. DSB II, p.487. Actualités scientifiques et industrielles XLII.

Idem. L'Électron magnétique (théorie de Dirac). Ibid., idem, 1934, 1st ed., VIII,(2),315p., ills., orig. wr.

= First edition in which Louis de Broglie exposes his theory of so-called "neutrinal" light, based on the idea that the photon results from the fusion of two neutral particles, the hypothetical Dirac neutrinos.

Idem. La mécanique ondulatoire du photon. Une nouvelle théorie de la lumière. Ibid., idem, 1940/ 1942, 1st ed., 2 vols., 281; 148p., orig. unif. wr.