EKTA JOSHI, et al. “ Soil Microbial Biomass Carbon and Soil Enzymatic Activity under Nutrient Omission Plot Technique in Maize (Zea mays)wheat (Triticum Aestivum) Cropping System”. Indian Journal of Agronomy, vol. 66, no. 2, Oct. 2001, pp. 170-9, https://doi.org/10.59797/ija.v66i2.2853.