Delgermaa, B, and O Sunjidmaa. “A Survey of Microorganism and Its Biological Effects in the Straw Covered Field”. Mongolian Journal of Agricultural Sciences 15, no. 2 (September 30, 2015): 86–90. Accessed December 26, 2024. https://mongoliajol.info/index.php/MJAS/article/view/552.