000 00381nam a22001217a 4500
020 _a0821317059
082 _a338.1
_bMUR.N1
100 _aMurphy, Josette.
245 _aFarmers' estimations as a source of production data :
_bmethodological guidelines for cereals in Africa/
260 _aWashington D. C :
_bThe world bank,
_c1991.
300 _a71p;
_bill.
942 _2ddc
_cUN&WB
999 _c721872
_d721872