5
by P. R.
Published 1845
S. Clarke

6
by Halmos, P.R.
Published 1985
Springer New York

8
by Wouves, P. R.
Published 1797
De l'imprimerie de Benjamin Franklin Bache, no. 112, rue de Marche/a1

9
by Soni, P. R.
Cambridge International Science Pub

10
by Gerke, P.R.
Published 1982
Springer Berlin Heidelberg

11
by Halmos, P.R.
Published 1982
Springer New York

12
by Halmos, P. R.
Published 1974
Springer New York

13
by Davies, P R
Published 2007
Royal Society of Chemistry

14
by Halmos, P.R.
Published 1958
Springer New York

15
by Whitely, P. R.
Published 1971
Springer US

16
by Ashurst, P. R.
Published 1991
Springer US

17
by Halmos, P.R.
Published 1974
Springer New York

18
by Burch, P.R.
Published 1976
Springer Netherlands

19
by D. P. R.
Published 1813
s.n

20
by Marchand, P. R.
Published 1845
Librairie de Guillaumin