美国 现代美国 

 dissemination of science： 《印第安人野外生存手册》 Read works of 奥尔森拉里迪 Anaoersen at 百家争鸣

　　Indian descent, Boy Scouts of America outdoor survival instructor, coach of the U.S. Navy Seals outdoor survival. Olson is an internationally renowned experts in the famous outdoor survival, outdoor survival for many years engaged in research work.