Ballantine, New York, 1973, 4^th U.S. pr.  ISBN 0-345-23581-9.  MMPB 158 pages including Glossary.  Good; wraps show edge and cover wear, faint creases and reading creases; binding sound with a slight lean.  Interior clean and unmarked with tanning pages; a few pages have a bit of rippling in fore-edge margins.  ‘… gifted with a limitless imagination.  With it he created an entire culture for a vast planet – many races, many peoples, strange creatures, and stranger plants, an entire history stretching back through eons of time and extending itself into the future with scientific inventions only dreamed of even in our own time. … coupled with an ability to write startlingly graphic prose, vivid with color and excitement, seething with action, and rich with the barbaric splendor of bygone ages.  Thuvia, Maid of Mars is the fourth book in a classic series of eleven volumes.’ (from first page)