Baseline assessments the state of the Philippine environment অনুযায়ী Sajise, Percy E. 1943-, Tapay, Nenita E., Pacardo, Enrique P., Briones, Nicomedes D., Jimenez, Rosario D., Gomez, Edgardo E., Zamora, Prescillano M., Fortes, Miguel D., Zafaralla, Macrina T., Zosa, Feranil Imelda