000 00356nam a2200121Ia 4500
008 220204s9999 xx 000 0 und d
082 _a631.459:631.61
_bHUD
100 _aHudson, Norman W
245 0 _aStudy of the reasons for success or failure of soil conservation projects
260 _aRome
_bFAO
_c1991
490 _aFAO soils bulletin 64
942 _cBK
999 _c40888
_d40888