Posted: March 18, 2019
Ressources :
•http://www.ideafinder.com/history/
•http://totallyabsurd.com
•http://inventors.about.com/library/bl_by_state_inventors.htm
•http://www.enchantedlearning.com/inventors/usonly.shtml
•http://www.teacheroz.com/inventors.htm
•http://inventionreaction.com
•http://greatachievements.org
