http://landscaping.about.com/od/poisonouslandscapeplants/tp/poisonous-plants.htm,
https://www.newyorkupstate.com/outdoors/2016/06/meet_new_yorks_17_slithery_snakes_--_three_are_poisonous_to_humans.html
www.snakesareus.com
http://www.youtube.com/watch?v=6KyxGlZynUA
http://seattlebackpackersmagazine.com/author/philip-werner/
http://www.rei.com/learn/expert-advice/loading-backpack.html
http://www.ussartf.org/compass_basics.htm
http://www.youtube.com/watch?v=4yli86dgFDw
http://www.youtube.com/watch?v=inmlJpCWZss
