RT Sound Recording DB /z-wcorg/ DS http://worldcat.org ID 277442379 LA English T1 Excursions in science. Excursions in science. Program no. 67, Program no. 68, Program no. 67, Program no. 68, A1 Tupper, Howard., Markham, Emerson., Norton, Francis J.,, Evans, E. S., Goldin, J. David., Andrew W. Mellon Foundation., Marr Sound Archives., PB General Electric PP Schenectady, N.Y. YR 1944 AB Program no. 67: Experiments conducted testing the intensity of light; can be reproduced at home. Based on a research by Dr. Francis J. Norton. Program no. 68: A discussion of the mechanics and advantages of using a glider plane. Based on a research by Col. E.S. Evans.