"Suomalaisia keskiajan tuktiuksia: Veroja, laitoksia, virkamähda" - a book written by the outstanding Finnish historian Väinjo Vojonmaa, explores various aspects of medieval Finland. The author examines taxes, institutions and the activities of officials of that time, revealing important aspects of social and political life and the economic system. This book is a valuable resource for those interested in the history of Finland and the Middle Ages in general, providing a unique opportunity to better understand the development of this country in the past.