1
by Suchit Bunbongkarn
Published 1996
2
by Vasil, R. K.
Published 1980
3
by Huckshorn, Robert J.
Published 1984
4
by Alias Mohamed, 1945-
Published 1994
5
by Wilson, Francis Graham, 1901-
Published 1990
6
by Gomez, Edmund Terence
Published 1994