6
by Helbig, Gerhard, 1929-2008
Published 1991
Book
8
Book
11
Published 1956
Book
12
by Allan, Keith, 1943-
Published 2007
Book
14
by Robins, R. H. 1921-2000
Published 2000
Book
17
18
by Elsen, Hilke, 1962-
Published 2014
Book