The Philippine Island World: A Physical, Cultural, and Regional Geography

abaca acres agricultural Agusan air masses American approximately areas barrio Batangas Bicol Bohol Bukidnon Cagayan Valley Cebu Central Plain century climatic coast coastal coconut commercial Cordillera corn Cotabato crop cultivation cultural Davao Davao Gulf deposits dipterocarp domestic dominant eastern economic export farms feet Filipino fish forest growth Gulf highlands Ilocos Iloilo important increase industry interior interisland Laguna Laguna de Bay Lanao land Leyte located lowland Manila Bay manufacturing Masbate Mindoro mineral Moslem mountain municipalities Negros Norte northern Luzon operations Palawan Panay patterns Peninsula percent Philippines plant population port precipitation production Province region relatively rice River Romblon Samar season sector settlement significant slopes soils southeastern Luzon southern southwestern Spanish square miles structure sugar sugarcane SULU ARCHIPELAGO Sulu Sea tion tobacco towns trade transportation trees tropical upland urban vegetation Visayan Islands volcanic western western Visayas Zamboanga zone