Rapport sur les unités photométriques /
Blondel, André,b. 1863
Blondel, André,1863,-former owner.StEdNL
Congrès International des Èlectriciens(1881 :Paris, France)
Lausanne :
Imprimerie H. Vallotton, guex & Cie 2, rue de la Louve, 2,
1896.
At the head of the title page "With the author's compliments".
Photometry
Switzerland Lausanne