As part of Volume VI of the "Annals of the Society of Friends of Science in Silesia" A 21-page paper by M. Gumowski entitled. "Three Boleslavs of the XII century". - pp. 223-243 + 3 plates with images of coins.
- edition 1938, Katowice
- format 15.5 x 23 cm
- pages 522 text with few illustrations and figures
- soft cardboard binding
- good condition +, soiling on cover and edges of block, light defect in upper corner of back cover, inside clean, without reservations