EricTheRed, in the absence of any books that deal adequately with the Ragozin, you might create a database/tree of GM Aleksandrov's games. He has a very narrow repertoire and plays the Ragozin and Nimzo-Indian move order discussed in other posts almost exclusively as Black.

I think there is a lot to be said for the "heroes" approach of finding someone who plays a particular opening with almost obsessive devotion (Gleizerov, Aleksandrov, Williams, Volkov, Miezis, and of course Sveshnikov spring to mind) and building a repertoire around what he or she plays.

(BTW, Aleksandrov was Shereshevsky's most successful student and played the White side of the repertoire from The Soviet Chess Conveyor for many years.)