What is the best book on the soviet union?

Question:Politics, Work, and Daily Life in the USSR: A Survey of Former Soviet Citizens.
Author: James R. Millar

The most comprehensive study I've read.

Best Answer - Chosen by Asker: Politics, Work, and Daily Life in the USSR: A Survey of Former Soviet Citizens.
Author: James R. Millar

The most comprehensive study I've read.

I don't know about research books or anything, but the only book I've read that has anything to do with the soviet union is One Day In the Life of Ivan Denisovich. It was pretty good.