Baseline assessments the state of the Philippine environment - 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 (State of the nation research reports, 1996)