21
Published 1990
22
by Zastrow
Published 1994
23
24
by Trowell
Published 2002
25
by Muhamed Awang
Published 1992
26
by Hockey
Published 1993
27
by De Vos
Published 1990
28
Published 1988
29
by Wooffitt
Published 1992
30
by Markham
Published 1993
31
by Jones
Published 1995
32
by Kaplan, 1935-
Published 1995
33
by Parikh
Published 1991
34
by Covey
Published 1990
35
by Skopec
Published 1991
36
37
by Dyregrov
Published 1991
38
by Neven
Published 1994
39
by Stuart-Hamilton
Published 1994
40
by Zuker
Published 1991