000 00256 a2200121 4500
080 _a63"19"
_bF 686 A
245 1 _aAgriculture
_bToward 2000
260 _aRome
_bF.A.O.
_c1979
650 _aAgriculture
100 _a
_d
300 _a257 p.
901 _a179451
999 _c78034
_d78034