Welthandelsbräuche, 1480-1540. [Five Manuscripts: the First Containing Observations on Commercial Usage and Prices in the Years 1484-1502, Probably by H. Paumgartner the Elder, the Others Similar Observations by H. Paumgartner the Younger for the Years 1508, 1514-15 and 1535-43. Edited, with an Introduction, by Carl Otto Müller.].