00559 a2200205 4500 Wageningen CTA Sustaining soil productivity in intensive Africa agriculture : proceedings 124 p. <Agriculture> 1995 graph., cartes, tabl. ; 30 cm. Fr. TECHNICAL CENTER FOR AGRICULTURAL AND RURAL COOPERATION. ACCRA, GHANA . Seminar 1993 12118 92-9081-138-2 10569 10569 0 0 0 0 BEPAC BEPAC 2009-02-27 EPAC 0 631.4/T255s 20929EPAC 2009-02-27 00:00:00 1 LIVR