1998 annual water quality report on the Laguna de Bay and its tributary rivers. - Philippines. Department of Environment and Natural Resources. Laguna Lake Development Authority (Pasig City Department of Environment and Natural Resources, Laguna Lake Development Authority, 1998)
Title from cover.
Includes bibliographical references.
Fi-15795g donated by Dr. Leonard Q. Liongson.
Keywords: Water quality -- Philippines -- Laguna de Bay; Water supply -- Philippines -- Laguna de Bay