(1979). Dramaturgie der Zeit, Rombach Verlag, Freiburg i. Br. 1977, 240 S.. In: Amerikastudien American Studies (Amst). J.B. Metzler, Stuttgart. https://doi.org/10.1007/978-3-476-98937-6_26 Download citation .RIS .ENW .BIB DOIhttps://doi.org/10.1007/978-3-476-98937-6_26 ...
drainageSubsurface drainage systems are needed for crop production in soils in tropical areas. However, these systems have had an impact on the concentration and the state of nitrogen (N) in the soil. An experiment was carried out in sorghum plots in order to evaluate the effect of the ...