000 00306nam a2200133Ia 4500
008 230108s9999 xx 000 0 und d
100 _aUSDA
245 0 _aDrainage of Agricultural Land
260 _bScientific Publishers
260 _c1990
365 _b600.00
650 _aEngineering
942 _cBK
999 _c246184
_d246184