000 00240 a2200109 4500
082 _a630.711
_bFOS
245 _aThe soil
_b: how to improve the soil
260 _aRome:
_bFAO,
_c1976.
300 _a29p
650 _aSoils
_9107946
942 _cBK
999 _c14690
_d14690