ผู้เขียน: Elers Koch

Elers Koch, a key figure in the early days of the U.S. Forest Service, was among the first American-trained silviculturists, a pioneering forest manager, and a master firefighter. By horse and on foo …

Elers Koch, a key figure in the early days of the U.S. Forest Service, was among the first American-trained silviculturists, a pioneering forest manager, and a master firefighter. By horse and on foo …