Blue cross--blue shield plan Blues announce plan to merge into one corporation. Post Ap 22, 1976 p.28 RMN Ap 22, 1976 p.39 Colorado Attorney General asks for delay in Blues':rate hike decision. Post Ap 22, 1976 p.28 RMN Ap 22,1976 p.39 Colo. Blues awarded a $2.5 million rate hike, companies also allowed to accelerate approved rate changes, RMN My 1,, 1976 p.5,45 Post My 19 1976 p.1 Discontinues Panel Practice plan because of increased claims. RM Journal My 59, 1976 p.1*4