00559nam a2200133Ia 4500008004100000082002100041100003000062245002900092260004800121300001400169490005700183600002400240650016100264140224s9999    xx            000 0 und d  a631.62(082.2) L4  aSchilfgarde, Jan Van, ed.  aDrainage for agriculture  aMadisonbAmerican Society of agronomyc1974  axxv,700p.  aAmerican Society of Agronomy, Agronomy Series, no.17  aJan Van Schilfgarde  aGrowth (Plant)-water requirements,Crop-yields-economic aspects,Drainage-mathematical models,Water flow-mathematical models,Soil moisture-mathematical models