00355nam a2200085Ia 4500008004100000082002300041100002200064245013200086260005100218220204s9999    xx            000 0 und d  a631.44(543.1)bRED  aREDDY, K S et al. 0aEnhancing productivity of soybean - wheat system by balanced and integrated nutrient management on blak soils of Madhya Pradesh  aIndian Institute of Soil SciencebBhopalc2007