The Adventures of Hal Roger is divided into fourteen volumes: (1) Adventures of Amazon; (2) South China Sea exploration; (3) treasure hunting under the sea; (5) Bravely explore the crater; (6) African exploration; (3) Grasping white elephants skillfully; (8) Hunting grounds suppress bandits; (3) tracking man-eating lions; (4) Intelligent capture of gorillas; (3) Breaking into a cannibal country; (3) intelligent fighting beasts; (4) This set of books was adapted by naturalist Willard Price through his own personal experience. It looks good and you can learn something. I will give you a website.

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