@book{oai:ir.ide.go.jp:00027496,
 author = {N'Daw, Papa Samba},
 month = {},
 note = {FWIV/63/Aj1, application/pdf, ARS000300_004, 3},
 publisher = {Institute of Developing Economies},
 title = {3. The Existing Farming System},
 year = {1989}
}