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(21 - 33 of 33)
Atomizer-burner, acetylene
Chemistry models, plastic
Potentiometer, type B high precision #2780
Military slide rule
Chemistry models, plastic
Cosmic Ray Measuring Device
Box, hand-made, grey-printed, wooden
Hydrogen lamp power supply, Model B
Automobile model for GALCIT 10 ft. wind tunnel
Antenna, Cosmic Ray Measuring Device
Ira S. Bowen
Theodore von Karman and Barbel Talbot