21
by White, M.A.
Published 1985
Palgrave Macmillan UK

22
by Royce, Tony
Published 1992
Macmillan Education UK

23
by Gascoigne, Serafim
Published 1985
Macmillan Education UK

24
by Longley, Dennis, Shain, Michael
Published 1989
Palgrave Macmillan UK

25
by Gosling, P.E.
Published 1985
Macmillan Education UK

26
by Gosling, P.E., Laarhoven, Q.L.M.
Published 1980
Macmillan Education UK

27
by McLuckie, Keith, Barber, Angus
Published 1986
Macmillan Education UK

28
by Jackson, Ivan F.
Published 1998
Macmillan Education UK

29
by Nicol, Maggie
Published 1997
Macmillan Education UK

30
by Saxon, Diane
Published 1997
Macmillan Education UK

31
by Chapman, Arthur
Published 1991
Macmillan Education UK

32
by Chedzoy, O.B., Ford, Sandra Elizabeth
Published 1969
Palgrave Macmillan UK

33
by Unger, Claus, Bass, Leonard J.
Published 1996
Springer US

34
by Katz, Yaacov, Millin, Daniel, Offir, Baruch
Published 1996
Springer US

35
by Bird, Richard, Meerkens, Lambert
Published 1997
Springer US

36
Published 1997
Springer US

37
Published 1996
Springer US

38
Published 1998
Springer US

39
Published 1996
Springer US

40
Published 1997
Springer US