Poland's Homogeneity- Deportation and Genocide
This is a brief overview of the process by which Poland lost nearly all of its ethnic diversity.
http://www.encyclopediaofukraine.com/...
https://www.thriftbooks.com/w/a-brief...
Eastern Europe! : Everything You Need to Know about the History (And More) of a Region That Shaped Our World and Still Does
by Tomek E. Jankowski