1
Published 1993
2
by Messinger, Heinz
Published 1982
3
by Duff, Charles
Published 1960
4
by Moulton, Jenni Karding
Published 1994
5
6
Published 2006
7
Published 1995
8
Published 1993
9
Published 1993
10
by Wilmann, Helmut
Published 1982
11
Published 1990
12
Published 1994
13
by Lange, Eva C.
Published 1966