003770000a22001330004500020001500000060000800015082002200023100001700045245005700062260003000119260000900149300000800158650007700166  a41658 490X  a100  a338.109 173 4 DUM  aDumond, Rene  aTypes of rural economy: studies in world Agriculture  aLondon, Methuen& Co. Ltd.  c1954  a551  aRural economy-types/ Rain forest- Belgian Congo/ Tropical Savanna-Africa