1
by Stephan, Horst, 1873-1954.
Published 1938
Book
2
by Smith, John H., 1954-
Published 2011
Book Electronic
3
by Bräutigam, Michael,
Published 2016
Book Electronic
4
by Weir, David A.
Published 1990
Book Electronic
6
by Howard, Thomas A. 1967-
Published 2006
Book Electronic