WASET
    Khin S. Aye,  Investigation on the Effectiveness of Zinc Sulphate and Biofertilizer on Mustard Plant.   journal   = {International Journal of Agricultural and Biosystems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2011, vol. 51(3). 109 - 111
    [viewed 11 May 2024]. Available from: https://publications.waset.org/pdf/5555.