Mahendra, M., Muhammad Arif Nasution, Fitria Rahmayanti, and Dini Islama. “Application Of Appropriate Technology For Automatic Bird Pest Removal And Automatic Fish Feed In The Minapadi System In Beutong Nagan Raya District”. International Journal Of Community Service, vol. 1, no. 3, Nov. 2021, pp. 231-7, doi:10.51601/ijcs.v1i3.38.