000 00340nam a2200109Ia 4500
008 151015s9999 xx 000 0 und d
020 _a9251036446
100 _aNorman , D.W. & Worman, F.D.& [ et.al]
245 4 _aThe farming systems approach to development and appropriate technology generation
300 _a229 1995p.
942 _cFAO
_2udc
999 _c24784
_d24784