00747nam a22001937a 4500 D0001NC010421-011 OSt 20210104152336.0 210104b ||||| |||| 00| 0 eng d De Vera-Ruiz, Ellalyn Air pollution levels in Metro Manila 59% lower in early hours of New Year’s Day / by Ellalyn De Vera-Ruiz https://mb.com.ph/2021/01/02/air-pollution-levels-in-metro-manila-59-lower-in-early-hours-of-new-years-day/ air pollution levels Metro Manila New Year's day Manila Bulletin January 4, 2021 http://elibrary.doh.gov.ph/cgi-bin/koha/opac-retrieve-file.pl?id=804be9ed3865ab5a58afe90924f48c83 NC 2224 2224 0 0 0 0 DOHCL DOHCL ElectronicRes 2021-01-04 0 010421-011 D0001NC010421-011 2021-01-04 00:00:00 2021-01-04 NC