00504nam a2200145 4500 48698 20260918151303.0 22391 FLEISCHMAN, Robert How the National Football League (NFL) Has Strategically Managed the 1961 Sports Broadcasting Act (SBA) to Gain Market Supremacy in the USA and a Dominant Market Niche in Mexico Artículos I.Mackenzie, Robert; Coaut. núm.20 (julio-diciembre, 2012) 51 - 71 pp. 16 48698 48698