https://www.citylab.com/environment/2016/06/cleaning-up-manilas-pasig-river-one-tributary-at-a-time/488885 マニラの川辺浄化の記録。
[pickup] Cleaning up Manila’s Pasig River, one tributary at a time
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https://www.citylab.com/environment/2016/06/cleaning-up-manilas-pasig-river-one-tributary-at-a-time/488885 マニラの川辺浄化の記録。