For Further Information

Adams, J. B.: Lunar and Martian Surfaces: Petrologic Significance of Absorption Bands in the Near-Infrared. Science, vol. 159, 1968, p. 1453.

Chapman, C. R.; Pollack, J. B.; and Sagan, C.: An Analysis of the Mariner 4 Photographs of Mars. Smithsonian Astrophys. Obs. Spec. Rept. 268, 1968.

Dollfus, A: Polarization Studies of Planets (ch. 9). Visual and Photographic Studies of Planets (ch. 15). Vol. Ill of The Solar System: Planets and Satellites, G. P. Kuiper and B. M. Middlehurst, eds., Univ. of Chicago Press, 1961. Focas, J. H.: Seasonal Evolution of the Fine Structure of the Dark Areas of Mars. Planetary and Space Sci., vol. 9, 1962, p. 371. Hess, S. L.: Mars as an Astronautical Objective.

Advan. Space Sci. Technol., vol. 3, 1961, p. 151. Leighton, R. B.; and Murray, B. C.: Behavior of Carbon Dioxide and Other Volatiles on Mars. Science, vol. 153, 1966, p. 136. Leighton, R. B.; et al. : Mariner Mars 1964 Project Report: Television Experiment, Part I: Investigators' Report. Jet Propulsion Lab. Tech. Rept. 32-884, pt. I, 1967. Leovy, C.: Mars Ice Caps. Science, vol. 154,

Loomis, A. A.: Some Geologic Problems of Mars.

Geol. Soc. Am. Bull., vol. 76, 1965, p. 1083. Michaux, C. M.: Handbook of the Physical Properties of the Planet Mars. NASA SP-3030,

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