BRAGG William - THE MYSTERIES OF THE ATOM(ON THE ISTITY OF MATERIALS) with 57 figures and 32 plates containing 74 engravings Bibljoteka Wiedzy Vol. 6
Translated by Dr.Fil.Karol Szlenkier. Published by Trzaska, Evert and Michalski S.A., Warsaw(n.r.). Dimensions 21.8x15cm; pages 174.Publisher's cloth binding(scuffs, soiling, post-library stamp on cover), ownership stamps, post-library stamps inside, foxing- discoloration of paper.