na INLIS000000000016703 Ind 0010-1118016703 Non-ionic nitrogen nutrition of plant BEUSICHEM, M.L. VAN Beusichem, M.L.van Landbouwhogeschool te Wageningen Wageningen Landbouwhogeschool te Wageningen 1984 141 p. 141 p. ills.Incl.:Bibliography p. 133-134 581.13 UREA NITROGEN NUTRIENT UPTAKE ASSIMILATION 361/DTS/86