Pirates of Venus. Edgar Rice Burroughs, 1932.
Back text reads: "EDGAR RICE BURROUGHS
Carson Napier is bound for Mars, but finds himself forced to crash-land on the planet Venus instead. Beneath the eternal clouds Carson discovers a utopia, a world peopled by a wise and beautiful race, eternally young and perpetually splendid.
But despite their wisdom a horrible danger threatens the fair folk of Vepaja, and at the heart of it is the lovely princess Duare, whose beauty is as unattainable as the evening star. And Carson, having seen her, knows he has met his destiny...."