1
by Duncan
Published 1990
2
by Duncan
Published 1994
3
by Duncan
Published 2010
4
by Duncan
Published 2017
5
by Foley, Duncan K.
Published 2006
6
by Mitchell
Published 2007
...(Geoffrey Duncan)...
7
Published 1989
Other Authors: '; ...Duncan,...
8
by Hobbs
Published 1992
Other Authors: '; ...Duncan,...
9
Other Authors: '; ...Mitchell, G. Duncan...
10
Published 2008
Other Authors: '; ...Marshall, Duncan...