Publicado por NP: ca. 1909, 1909
Librería: Zubal-Books, Since 1961, Cleveland, OH, Estados Unidos de America
Condición: Good. *Price HAS BEEN REDUCED by 10% until Monday, Sept. 23 (sale item)* small octavo, 13 pp, library markings, soft vertical fold mark, still good in self wrappers; an advance printing of a paper to be read before the Third Annual Convention of the Illuminating Engineering Society, concerns the energy distribution in fire-fly light in the visible spectrum as measured by photographic plates. - If you are reading this, this item is actually (physically) in our stock and ready for shipment once ordered. We are not bookjackers. Buyer is responsible for any additional duties, taxes, or fees required by recipient's country.