1
by Talbot, P.H.B.
Published 1971
Macmillan Education UK

2
Published 1973
Springer Netherlands

3
Published 1993
Springer Netherlands

5
by Engelmoer, M., Roselaar, C.S.
Published 1998
Springer Netherlands

6
by Mielke, Howard
Published 1989
Springer Netherlands

7
Published 1910
Springer Netherlands

9
by Eggli, Urs, Newton, Leonard E.
Published 2004
Springer Berlin Heidelberg

10
Published 2003
Springer Berlin Heidelberg

11
Published 2004
Springer Berlin Heidelberg

12
by Lane, R.P., Crosskey, R.W.
Published 1993
Springer Netherlands

13
Published 1994
Springer Netherlands

14
Published 1991
Springer Netherlands

15
Published 1991
Springer Netherlands

17
by Reiss, H., Tremewan, W.G.
Published 1967
Springer Netherlands

18
by Kluge, Nikita
Published 2004
Springer Netherlands

19
Published 1995
Springer Vienna

20
Published 1994
Springer Vienna