3
by P. R.
Published 1845
S. Clarke

6
by Halmos, P.R.
Published 1958
Springer New York

7
by Ashurst, P. R.
Published 1991
Springer US

8
by Whitely, P. R.
Published 1971
Springer US

10
by Burch, P.R.
Published 1976
Springer Netherlands

11
by Vittal, P. R.
Published 2013
Dorling Kindersley (India)

12
by Gerke, P.R.
Published 1982
Springer Berlin Heidelberg

13
by Halmos, P.R.
Published 1985
Springer New York

14
by Wouves, P. R.
Published 1797
De l'imprimerie de Benjamin Franklin Bache, no. 112, rue de Marche/a1

16
by Soni, P. R.
Cambridge International Science Pub

17
by Davies, P R
Published 2007
Royal Society of Chemistry

18
by Halmos, P. R.
Published 1974
Springer New York

19
by Halmos, P.R.
Published 1982
Springer New York

20
by Halmos, P.R.
Published 1974
Springer New York