BOISE, Idaho (AP) — Three, men have been slain within a month in the lonely southern Idaho sagebrush. Clues are few though some circumstances are similar. All were robbed. Two were found dead in their cars in remote areas. The third man’s body was found in the hills. His car was abandoned miles away. The victims were Milo Glen Damron, Dr. John Hunt Jr. and Pfc. Wayne Siegel. Hunt and Siegel were each shot in the head. Damron was beaten and stabbed in the neck. Hunt, 37, a forestry pathologist from Portland, Ore., who was driving through Idaho to Yale Uni versity where he was to reach this fall, was also beaten. Siegel's blood-spattered car was found Aug. 14 near Dubois. The body of the 21-year-old Marine, who was driving from his home at Fort Ripley, Minn., to his base in Twentynine Palms, Calif., was found Sept. 2 in the hills near Montpelier. Damron, 52, a construction worker from Inkom, Idaho, was found dead in his car Sept. 12 on a back road of the Fort Hall In dian Reservation south of Black foot.