000 00295nam a2200121Ia 4500
008 170101s1975 xx 000 0 und d
082 _a631.3 HUD
100 _aHudson N. W.
245 0 _aField Engineering for Agricultural Development
260 _c1975
300 _a225 p.
942 _2ddc
_cB
999 _c541916
_d541916