1
by Hobert, Ingfried
Published 2001
2
3
by Perkins, R.B.
Published 1978
4
by Brady, Nyle C.
Published 1974
5
by Meredith, Mike.
Published 1992
6
by Khera, Harcharan Singh.
Published 1976
7
by Khera, Harcharan Singh.
Published 1971
8
by Conway, Steve.
Published 1982
9
by Drabble, J.H
Published 1973
10
by Russell, E. Walter.
Published 1973
11
by Chin, Hoong Fong
Published 1986
12
by Tietze, Harald W.
Published 2001
13
Published 1980
14
by Southwood, T.R.E.
Published 1976
15
by Carr, Archie
Published 1968
16
17
18
19
Published 1988
20