Rukangantambara, H.; Maniriho; Habumugisha , J. de D. Effect of Varied Nutrient Solution Concentration of P,Mo,S,Al and Mn Supply to Soil on the Yield Nitrogen Fixation of Two Leguminous Species Pigeon Pea (Cajanus Cajan) and White Leadtree (Leucaena Leucocephala) at Nyaruguru District, Southern Rwanda. eajst 2011, 1, 12-26.