Finished rereading this last night and I quite enjoyed it. Of course it was not quite as I remembered from when I first read this in high school but it was still quite an action adventure set on Mars. It was a lot more violent than I remembered. I reread this because I recently saw the John Carter movie and wanted to compare it with the book. Well there are a lot of differences - I believe some of the storyline from the movie actually came from some of the later Mars books. Anyway, I did enjoy both the book and the movie although some of it may have just been nostalgia. I will probably reread some of the other books in the series - "A Princess of Mars" kind of leaves you with a cliffhanger ending.
The first book in Burroughs John Cater of Mars series.