Subject
- Voyages and travels9
- Waage, Peter, 1833-19001
- Waals, J. D. van der (Johannes Diderik), 1837-19231
- Wages2
- Wagner, Julius Eugen, 1857-19241
- Wald, Frantisek, 1861-19302
- Walden, Paul, 1863-19579
- Walter de Gruyter & Co.1
- Walton, James Henri1
- War wounds5
- Warburg, Erich1
- Warburg, Otto C.7
- Warburg, Otto Heinrich, 1883-19703
- Warren, A. M.1
- Water-power3
- Weddings2
- Wegelius, Maziter1
- Wegscheider, Rudolf1
- Weinberg, Arthur von, 1860-19431
- Weise, Julius, 1844-19251