The SciencesMarch 1, 1937
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A Commercial Unit Made at Home, Materials Easily Obtainable, Uses Photoflood Bulbs for Light Source, High-Speed Enlarging
Stories by Herbert E. Hayden
Enlarge--Print--Retouch
A Commercial Unit Made at Home, Materials Easily Obtainable, Uses Photoflood Bulbs for Light Source, High-Speed Enlarging