00577nam a2200157 a 450000500170000000800410001703500150005805000240007310000160009724501040011326000550021730000090027244000860028165000300036770000220039720260819090824.0                                          a.b10049228  aTL796 A1 S6 no. 255  aSagan, Carl 2aA windblown dust model of Martian surface features and seasonal changes /b... and James B. Pollack  aCambridge, Mass. :bSmithsonian Institution,c1967  a44 p 0aSmithsonian Institution. Astrophysical Observatory. SAO special report ;vno. 255 0aMars (Planet)xAtmosphere  aPollack, James B.