https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-search.pl?q=ccl=su%3A%22Conservation%20of%20natural%20resources%22%20and%20se%3AHandbook%20in%20Economics%20%206&format=rss2 3 0 100 ISBN 444876464 https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=3877 By Arrow, Kenneth J.. Amsterdam [etc.] : North-Holland, 2005 . 3 v. (xxiii, 1357 p.) : ill. ; 25 cm. 444876464

]]> https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=3877 ISBN 444876464 https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=3878 By Kneese, Allen V.. The Netherlands : North-Holland, 1996 . 3 v. (xxiii, 1357 p.) : ill. ; 25 cm. 444876464

]]> https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=3878 ISBN 444876464 https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=3879 By Arrow, Kenneth J.. The Netherlands : North-Holland, 1995 . 3 v. (xxiii, 1357 p.) : ill. ; 25 cm. 444876464

]]> https://kohalibrary.pids.gov.ph//cgi-bin/koha/opac-detail.pl?biblionumber=3879