https://catalog.riphah.edu.pk//cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Levin%2C%20Peter%22&sort_by=relevance&format=rss 2 0 50 ISBN:9780335218226 (pbk) https://catalog.riphah.edu.pk//cgi-bin/koha/opac-detail.pl?biblionumber=62379 ]]> By Levin, Peter.
England Open University Press 2005 .
viii, 123 p. , Includes bibliographical references. ; 21.9 cm. .
9780335218226 (pbk)

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]]> https://catalog.riphah.edu.pk//cgi-bin/koha/opac-detail.pl?biblionumber=62379 ISBN:9780335219056 (pbk) https://catalog.riphah.edu.pk//cgi-bin/koha/opac-detail.pl?biblionumber=63444 ]]> By Levin, Peter | Graham Topping.
Maidenhead Open university press, 2006 .
viii, 138 p. ; 21 cm..
9780335219056 (pbk)

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