https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Krugman%2C%20Paul%20R.%20&format=rss2 4 0 100 ISBN 0881321168 https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=8395 By Krugman, Paul R. . Washington D.C. : Institute for International Economics, 1991 0881321168

]]> https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=8395 ISBN 9718535012 https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=8000 By Krugman, Paul R.. Quezon City : NEDA/UNDP, 1992 . 77p. 9718535012

]]> https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=8000 ISBN 9780321553980 https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=7665 By Krugman, Paul R. ; Obstfeld, Maurice. Boston, MA: Pearson Addison Wesley, 2009 . 706 p. 9780321553980

]]> https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=7665 ISBN 9780321553980 https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=7664 By Krugman, Paul R. ; Obstfeld, Maurice. Boston, MA: Pearson Addison Wesley, 2009 . 706 p. 9780321553980

]]> https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=7664