A Comparative Study of Authoritative and Cooperative Leadership Styles among the Managers of Fars Province’s Football Boards Considering the History of Performance and Different Ages of the Managers Journal title: Journal of Science and today’s world Authors: Zohrab Gohari, Mohammad Homayon pour, somayeh nejatbaksh Subject(s): Chemistry, Environmental Sciences, Physics, Cellular Biology, Zoology and Animal Science, Geology, Mathematics Education