00435nam a2200109Ia 4500008004100000100002300041245008600064260012500150700001200275700002400287700001400311220216s9999    xx            000 0 und d  aAKrishnakumar A K 0aStudies on morphological and some physical problems of soils under Hevea in India  bProceedings of the National Symposium on the distribution of red and laterite soils, Bangalore, 5-7 November, 1991c1991  aDatta B  aKarthikakuttyamma M  aPotty S N