2
by Euler, Hans von; Skarżyński, Bolesław
Stuttgart : Ferdinand Enke Verlag, 1942
Book
5
by Sokoloff, Boris
Berlin [u.a.] : Springer, 1968
Book
10
by Hollmann, Werner; Schneider, Wolfgang
2., neubearbeitete Auflage - Leipzig : Johann Ambrosius Barth Verlag, 1956
Book
11
by Burn, Ian
London : Farrand Press
Book
12
by Dabelsteen, Erik
Copenhagen : Munksgaard, 1992
Book
15
by Hansemann, David von
Berlin : Hirschwald, 1910
Book