REFERENCES
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- U.S.G.S., Experimental Space Photomap-Phoenix NI 12–7, 1:250 000 Scale, U.S.G.S., Washington, D.C., 1971.
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- F. E. Washer, "Lens Design for Colour", in Manual of Colour Aerial Photography (Ed. J. T. Smith), American Society of Photogrammetry, Falls Church, Virginia, 1968, 550 (94–138).
- Low contrast targets generally did not transfer sufficiently well to permit meaningful comparisons.
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- Department of the Army, Map Reproduction: TM5-425, Department of the Army, Washington, D.C., 1956, 224.
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