Guerrero III, Rafael D (2001) Sustainable development of Philippine lake resources: an agenda for research and development. In: Conservation and Ecological Management of Philippine Lakes in Relation to Fisheries and Aquaculture. Southeast Asian Fisheries Development Center, Aquaculture Department, Iloilo, Philippines.
Tuyor, J. B. (Philippine National Oil Co-Energy Development Corp) (2001) Contribution to the knowledge of the freshwater Copepoda of the Philippines. Asian International Journal of Life Sciences.
Williams, M. (2001) Arsenic in mine waters: an international study. Environmental Geology, 40 (3). pp. 267-278.
Zafaralla, Macrina T. (2001) An ecological assessment of seven major lakes in the Philippines. Southeast Asian Fisheries Development Center, Aquaculture Department, Iloilo, Philippines.