Herlambang S, Yudhiantoro D, Adventri Wibowo AW. Community Empowerment With the Utilization of Yards For Grape Cultivation Using Biochar Mixed Media In Covid-19 Pandemic. Spekta [Internet]. 2022Jun.14 [cited 2024Dec.22];3(1):71-80. Available from: http://journal2.uad.ac.id/index.php/spekta/article/view/4707