na INLIS000000000003189 0010-0121001555 A cost-benefit analysis of a gmelina hedgerow improved fallow system in claveria, Northern Mindanao, Philippines Damasa Magcale-Macandog and Patrick Rocamora Canberra The Australian National Univeristy 1997 19 p. ill; 30 cm 631.58 631.58 GMELINA ALLEY CROPPING PHILIPPINES. 4430 4430