Julius' piece is very valuable. I'll add one useful work if you are trying to understand population dynamics. Jana Vobecka, Demographic Avant-Garde: Jews in Bohemia between the Enlightenment and Shoah. Gives you the best current appraisal of how the Jewish population in Bohemia evolved (even before the Enlightenment). Available on Amazon for $29. -- Side note: Vobecka's book is wonderful and readable and builds on all the important work prior. I think we (the genealogical community) are finding data that suggests further evolution of thinking about population may be required.
Craig, I have a couple of questions for you about Vobecka's book. Please contact me at thausner@gmail.com