TY - BOOK AU - Singh R.P. AU - Chaudhuri D. AU - Mandal D. AU - Sarma A.C. TI - Effect of different levels of N, P and K on growth of immature rubber in lower Brahmaputra valley of Assam PY - 1999/// PB - Indian Journal of Natural Rubber Research KW - Assam KW - Growth KW - Immature rubber KW - NPK fertilizer KW - Soil analysis ER -