First 9 Crossover Events That Changed The DC Universe (In Chronological Order) 

www.cbr.com -BY SAGE ASHFORD - It's easy to complain about comic crossovers these days, but the reason những người hâm mộ can't get away from them is at one point they were incredibly popular.
những từ khóa: crossover, events, changed, dc universe, chronological order, DC Comics