SHARMA, NISHI, et al. “Quantification of Informal Spread of High Yielding Wheat (Triticum Aestivum) Seeds Among Farmers of National Capital Region”. The Indian Journal of Agricultural Sciences, vol. 92, no. 9, Sept. 2022, pp. 1091–1095, https://doi.org/10.56093/ijas.v92i9.112096.