000			00497nam a2200157Ia 4500
008			220216s9999 xx 000 0 und d
100			_aJoseph M.[a]
245		0	_aDiagnosis and recommendation integrated system. 2. Derivation of critical level of leaf nutrient concentrations in rubber
260			_bIndian Journal of Natural Rubber Research _c1996
300			_a17-21
650			_aCritical value
650			_aDRIS
650			_aFoliar analysis
700			_aRanganathan C.R.
942			_cBS
999			_c49231 _d49231