Mars Life has 432 pages.
A Wizard of Mars has 560 pages.
The Chessmen of Mars has 375 pages.
Journey to Mars has 543 pages.
Semper Mars has 376 pages.
Mars trilogy has 609 pages.
The Mars Project has 81 pages.
Moving Mars has 448 pages.
An Anthropologist on Mars has 327 pages.
Mars Probes has 315 pages.
Mars Mountain has 142 pages.
Destination Mars has 160 pages.
Rainbow Mars has 316 pages.