00367nam a2200073Ia 4500008004100000100002100041245015900062260007200221220216s9999    xx            000 0 und d  aKrishnakumar A K 0aSoils under Hevea in India: A physical, chemical and mineralogical study with a reference to soil moisture cation influence on yield of Hevea brasiliensis  bPh.D. Thesis. Indian Institute of Technology, Kharagpur, 1989c1989