000 00306nam a2200121Ia 4500
008 151015s9999 xx 000 0 und d
020 _a-O76-O76
100 _aLewis, A.B.
245 _aLand classification for agri. Development
260 _c1952
300 _a37 p.
500 _aFAO Development paper no 18
999 _c25572
_d25572