Ocampo, Y. D. Davao river to be filtered with water plants. IN Environment News. Manila Bulletin.
Citace podle Chicago (17th ed.)Ocampo, Yas D. "Davao River to Be Filtered with Water Plants. IN Environment News." Manila Bulletin .
Citace podle MLA (9th ed.)Ocampo, Yas D. "Davao River to Be Filtered with Water Plants. IN Environment News." Manila Bulletin, .
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