Population, Resources, Environment, and the Philippine Futures (Organization). (1980). Probing our futures: The Philippines, 2000 A.D. PREPF.
Chicago-viite (17. p.)Population, Resources, Environment, and the Philippine Futures (Organization). Probing Our Futures: The Philippines, 2000 A.D. Metro Manila, Philippines: PREPF, 1980.
MLA-viite (9. p.)Population, Resources, Environment, and the Philippine Futures (Organization). Probing Our Futures: The Philippines, 2000 A.D. PREPF, 1980.
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