OMG the translation of that book has stopped for some time, since I don't post in these forums anymore and it's so fucking boring to type everything. I need a scanning software with word recognition... :/
There's a recent book examining the historical antecedents of the Peruvian revolution, published in 2010. It's called Before the Shining Path: Politics in Rural Ayacucho, 1895-1980. Might be of interest.