00483nam a2200133Ia 4500 220216s9999 xx 000 0 und d Krishnakumar A K Studies on morphological and some physical problems of soils under Hevea in India Proceedings of the National Symposium on the distribution of red and laterite soils, Bangalore, 5-7 November, 1991 1991 Datta B Karthikakuttyamma M Potty S N JS 69616 69616 0 0 0 8 MAIN MAIN 2021-12-17 0 2021-12-17 00:00:00 2022-02-16 JS