https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Costello%2C%20Michael%20A.%20%22&format=rss2 5 0 100 ISBN https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=7817 By Costello, Michael A. . Pasig City : National Economic and Development Authority, 1989 . 169 pages : illustrations ; 23 cm

]]> https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=7817 ISBN https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=7868 By Costello, Michael A. . Pasig City : National Economic and Development Authority, 1988 . 12p.

]]> https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=7868 ISBN https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=7897 By Intal, Ponciano S., Jr. . Pasig City : National Economic and Development Authority, 1989 . 331p.

]]> https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=7897 ISBN https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=7045 By Costello, Michael A. . . p.257-274

]]> https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=7045 ISBN https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=7046 By Costello, Michael A. . . p.257-274

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