000 00301nam a2200121Ia 4500
008 151015s9999 xx 000 0 und d
020 _a9251038902
245 _aAgro-ecological zoning
_bGuidelines
260 _c1996
300 _aviii 78p.
500 _aFAO soils bulletin no- 73
942 _cFAO
_2udc
999 _c24240
_d24240