A Princess of Mars
A Princess of Mars is a science fantasy novel by American writer Edgar Rice Burroughs , the first of his Barsoom series . 
<triplet> A Princess of Mars <subj> Edgar Rice Burroughs <obj> author <subj> Barsoom <obj> part of the series <triplet> Edgar Rice Burroughs <subj> Barsoom <obj> notable work <triplet> Barsoom <subj> Edgar Rice Burroughs <obj> author