Nainggolan HL, Aritonang J, Sihombing M, Supriana T, Tafsin M. Structural modelling of rice fields-buffalo livestock based integrated agricultural systems in the context of regional development in Humbang Hasundutan, Indonesia. FOFJ [Internet]. 2019 Dec. 18 [cited 2025 Jan. 31];7(2):Article Nr. 106. Available from: https://thefutureoffoodjournal.com/manuscript/index.php/FOFJ/article/view/251