00301nam a2200121Ia 4500008004100000082001900041100001800060245002800078260002500106300001200131600001700143650001900160140224s9999    xx            000 0 und d  a631.45(540) K5  aAgarwal, R.R.  aSoil Fertility in India  aBombaybAsiacc 1965  ax,278p.  aR.R. Agarwal  aSoil Fertility