Louvrier J. a. V. I. A., . (1959). On a volumetric method of determination of silica. : .
Louvrier J and Voinovitch I A, . 1959. On a volumetric method of determination of silica. : .
Louvrier J and Voinovitch I A, . On a volumetric method of determination of silica. : . 1959.