These spectra were acquired for small areas on the lunar surface 5-20 km in diameter using the McCord two-beam photometer. They are all relative reflectance spectra, relative to the standard area MS-2.
McCord, T. B., M. Charette, T. V. Johnson, L. A. Lebofsky, C. M. Pieters, J. B. Adams, 1972a. Lunar spectral types. J. Geophys. Res, 77, 1349-1359.
McCord, T. B., M. Charette, T. V. Johnson, L. A. Lebofsky, C. M. Pieters, 1972b. Spectrophotometry (0.3 to 1.1 microns) of visited and proposed Apollo lunar landing sites. Moon, 52-89.
http://www.planetary.brown.edu/planetary/pds/bin/luretm25.tar.Z Last update 26 May 1995
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