<![CDATA[ Search for '(su:{ Partial differential equations}) and su-to:Differential equations, Nonlinear and available']]> http://lib.buet.ac.bd/cgi-bin/koha/opac-search.pl?q=ccl=%28su%3A%7B%20Partial%20differential%20equations%7D%29%20and%20su-to%3ADifferential%20equations%2C%20Nonlinear%20and%20available&format=rss2 0 20