首页 / 官方藏书 / The life of a fossil hunter / CHAPTER V DISCOVERY OF THE LOUP FORK BEDS OF KANSAS AND SUBSEQUENT WORK THERE, 1877 AND 1882–84
首页 / 官方藏书 / The life of a fossil hunter / CHAPTER V DISCOVERY OF THE LOUP FORK BEDS OF KANSAS AND SUBSEQUENT WORK THERE, 1877 AND 1882–84