Illuminating Engineering Practice; Lectures on Illuminating Engineering Delivered at the University of Pennsylvania, Philadelphia, September 20 to 28, 1916, Under the Joint Auspices of the University and the Illuminating Engineering Society

Illuminating Engineering Practice; Lectures on Illuminating Engineering Delivered at the University of Pennsylvania, Philadelphia, September 20 to 28, 1916, Under the Joint Auspices of the University and the Illuminating Engineering Society