The Oder-Neisse boundary and Poland's modernization:

The analysis of this problem required a scholar with a thorough knowledge of the relevant languages, access to the materials, a back- ground in economics and sociology as well as politics, the patience to bring order to a mass of disparate materials and statistics, and the analytical capacity to carry out a serious interdisciplinary study. If Professor Kruszewski does not employ many of the abstruse cate- gories of political or economic development, his book is a serious contribution to its understanding. It perhaps would not be going too far to suggest th at careful studies of this kind are more valuable than a number of the methodological treatises with which we have been inundated lately.