Fatmala E. RETURN COST AND VALUE ADDED ANALYSIS OF SWEET POTATO PROCESSING (Case Study: Pasar Bengkel Village, Perbaungan District, Serdang Bedagai Regency). Agripreneur [Internet]. 2021Dec.30 [cited 2026Sep.25];10(2):68-73. Available from: http://www.ejournal.iocscience.org/index.php/Agripreneur/article/view/1953