Roger Schall (1904-1995 )Pharmaceutical factory (Débat laboratories) in Garches, 1934. Silver print from the period. Stamp "Roger Schall", handwritten annotations and date on reverse. Image : 18,5 x 17,5 cm Sheet : 24 x 18 cm Roger Schall (1904-1995) Pharmaceutical factory (Débat laboratories) in Garches, 1934. Vintage gelatin silver print. Stamp "Roger Schall", handwritten annotations and date on verso. Image: 18,5 x 17,5 cm Paper: 24 x 18 cm