MARTIAN NORTH POLAR CAP, 1962-1968

[11] LOWELL P, 1905, ANN LOWELL OBS, V3, P144

[12] LOWELL P, 1905, ANN LOWELL OBSERV, V3, P266

[13] LOWELL P, 1905, 20 LOW OBS B

[14] LOWELL P, 1905, 22 LOWELL OBSERV B

[15] LOWELL P, 1906, MARS ITS CANALS, P32

[16] MAGGINI M, 1939, PLANETA MARTE, P269

[17] SCHIAPARELLI G, 1881, OSSERVAZIONI ASTRONO

[18] SCHIAPARELLI G, 1896, OSSERVAZIONI ASTRONO

[19] HIGH-DISPERSION SPECTROSCOPIC OBSERVATIONS OF MARS .2. WATER-VAPOR VARIATIONS [J]. ASTROPHYSICAL JOURNAL, 1967, 147 (02) : 743 - &

[20] HIGH-DISPERSION SPECTROSCOPIC STUDIES OF MARS .3. PRELIMINARY RESULTS OF 1968-1969 WATER-VAPOR STUDIES [J]. ICARUS, 1969, 11 (03) : 283 - &

[11] LOWELL P, 1905, ANN LOWELL OBS, V3, P144

[12] LOWELL P, 1905, ANN LOWELL OBSERV, V3, P266

[13] LOWELL P, 1905, 20 LOW OBS B

[14] LOWELL P, 1905, 22 LOWELL OBSERV B

[15] LOWELL P, 1906, MARS ITS CANALS, P32

[16] MAGGINI M, 1939, PLANETA MARTE, P269

[17] SCHIAPARELLI G, 1881, OSSERVAZIONI ASTRONO

[18] SCHIAPARELLI G, 1896, OSSERVAZIONI ASTRONO

[19] HIGH-DISPERSION SPECTROSCOPIC OBSERVATIONS OF MARS .2. WATER-VAPOR VARIATIONS [J]. ASTROPHYSICAL JOURNAL, 1967, 147 (02) : 743 - &

[20] HIGH-DISPERSION SPECTROSCOPIC STUDIES OF MARS .3. PRELIMINARY RESULTS OF 1968-1969 WATER-VAPOR STUDIES [J]. ICARUS, 1969, 11 (03) : 283 - &