Die Wasserkräfte ihr Ausbau und ihre wirtschaftliche Ausnützung, 2 vols.

Berlin: J Springer, 1922. Reprint.. Original publisher's cloth.. A very good copy; signatures torn from the top of half title pages.. 4to. There are numerous tables and text illus..

An encyclopaedia of engineering technology as it applies to the construction of canals, dams, turbines and most other economically viable forms of water power. This is a highly detailed treatise that incorporates European and American developments. What is especially interesting is the attention paid to construction details. Each volume is well illustrated. The volumes each have a small printer's slug stating ' Manuldruck 1922 ' . This was a form of photo-mechanical reproduction for printed books. Each volume retains the orig. impression date 1913 but were actually done as photo-mechanical re-prints in 1922. The quality of printing and uniform bdgs. would make it impossible to tell the difference without the printer's slug.