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1 |
Los positivos Frerk, Friedrich Willy. - Barcelona : Ed. Omega, [ca. 1950], 1. ed.
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2 |
La mise au point Frerk, Friedrich Willy. - Paris : Editions Prisma, [1949]
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3 |
El enfoque y vuestra cámera Frerk, Friedrich Willy. - Barcelona : Ediciones Omega, c 1948
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4 |
All about focusing and your camera Frerk, Friedrich Willy. - London : The Focal Press, 1942, 11. - 15. thous.
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5 |
All about better prints for your darkroom Frerk, Friedrich Willy. - London : The Focal Press, 1940
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6 |
Cruising with a camera Frerk, Friedrich Willy. - London : Focal Pr., 1939, 1. print.
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