TY - BOOK AU - Schlippe, Pieree De TI - Shifting cultivation in Africa: the zande system of agriculture U1 - 631.5818 21st ed. PY - 1956/// CY - London PB - Routeledge and Kegan Paul KW - Agriculture KW - Jhooming KW - Shifting cultivation KW - Zande crop N1 - Index: p. 298-304 ER -