“Effect of Tillage Options and Straw Management on Crops Productivity and Soil Fertility in Rice-Wheat-Cropping Pattern: Rice-Wheat Crop Productivity”. Biological Sciences - PJSIR, vol. 59, no. 2, Aug. 2016, pp. 69-74, https://doi.org/10.52763/PJSIR.BIOL.SCI.59.2.2016.69.74.