http://www.onemanga.com/To_Aru_Kagaku_no_Railgun/30/01/
It's 47 pages long. Great chapter with the fight between n°3 and 4.
Considering how the story goes thanks to the anime (To aru Majutsu no Index) i'm still confused at how Misaka failed to terminate the clone project... I'm just wondering because she DID destroy all the facilities.
And interesting enough, Touma makes an appearance in the last page. Can't wait for the next chapter.