1
by Walker, G.
Published 2008
Woodhead Pub.

2
by Cooke, B., Walker, G.
Published 1994
Macmillan Education UK

3
Published 1992
Cambridge University Press
Other Authors: ...Walker, G....

4
Published 1992
Cambridge University Press
Other Authors: ...Walker, G....

5
Published 1999
Springer US
Other Authors: ...Walker, G.R....

6
Published 1991
Springer US
Other Authors: ...Walker, G.E....