TY - BK AU - Lemaire,G. TI - Diagnosis of nitrogen status in crops SN - 3-540-62223-3 U1 - 631.84 PY - 1997/// CY - Berlin (Germany) PB - Springer, KW - Crops KW - AGROVOC KW - Nitrogen content KW - Plant nutrition KW - Plants KW - Proximate composition ER -