30 x 42 in (75 x 107 cm)
ID #101462
1950 1955 250-500 Chart 26. Light charts educational foot-candle meter industrial industry information informative institutional instructional invention inverse lenses light mirrors Original 1955 periscope product reflection refraction schools science scientific size-29-5x42 slick coating on surface; dimensions may vary slightly with each by about a 1/4 inch telescope US United States vintage poster W. M. Welch Manufacturing Company
Lance Hidy Electric Design
USA, 1990
Una -- Ressuscite? Monos -- Oui
France, c. 1970s (?)
IV Foire Internationale de la Chimie
Yugoslavia, 1963
Standard Class 2 2-6-0 Engine
Great Britain, c. 1950s (?)
The Era of Antibiotics
United States, c. 1950s
The Development of Chemotherapy
