Effect of the irregular shelterwood system on soil organic carbon stock and soil quality of Shorea robusta Gaertn. f. forest in Nepal oleh Anil Poudel, Santosh Ayer, Rajeev Joshi, Jeetendra Gautam, Sachin Timilsina, Keshav Khadka, Kishor Prasad Bhatta, Menuka Maharjan