MANKOTIA, B. S., & SHARMA, H. L. (2013). Yield attributes and yield of gobhi sarson (Brassica napus ssp oleifera) and toria (B. rapa) under different levels of nitrogen, phosphorus and farmyard manure in mid-hills of north-western Himalayas. The Indian Journal of Agricultural Sciences, 67(3). https://epubs.icar.org.in/index.php/IJAgS/article/view/29855