Bullecer, Rumila Cilocilo. “Domestication of Indigenous Timber Species in Degraded Open Karst Lands: A Decade of Experience”. JPAIR Multidisciplinary Research 1, no. 1 (November 11, 2008): 313–324. Accessed May 2, 2025. https://philair.ph/index.php/jpair/article/view/45.