The following is a book in the series 'The Polish Christian Philosophy in the 20th Century', it's a collection of texts going over the philosophy of the Polish historian Feliks Koneczny. A thinker notorious for establishing a system of social analysis based on the comparitive study of civilisations long before such thinkers as Toynbee and Dugin. The book contains a biography of the thinker, an analysis of his thought in context of his time, and a glossary as well as his selected writings.
The selected writings are: 'The Pressure of the Orient on the West' (1937), 'The Church as the Political Educator of Nations' (1938), 'Nihilism and Russification' (1997) and 'Bureaucracy' (1997).
TL;DR - Koneczny is the Polish Spengler