首页 / 官方藏书 / The Variation of Animals and Plants under Domestication / CHAPTER XVII. ON THE GOOD EFFECTS OF CROSSING, AND ON THE EVIL EFFECTS OF CLOSE INTERBREEDING.

CHAPTER XVII. ON THE GOOD EFFECTS OF CROSSING, AND ON THE EVIL EFFECTS OF CLOSE INTERBREEDING.

The Variation of Animals and Plants under Domestication · Charles Darwin · 第 34 / 64 章