@article{belay_2019, title={Study on Biogas Energy Production from Cactus (Opuntia ficus-indica (L.) Mill.)}, volume={5}, url={https://ejssd.astu.edu.et/index.php/EJSSD/article/view/24}, DOI={10.20372/ejssdastu:v5.i2.2018.24}, number={2}, journal={Ethiopian Journal of Science and Sustainable Development}, author={belay, jemal}, year={2019}, month={Feb.}, pages={83 - 92} }