Prasetyo, D. A. “Study of Economic and Financial Feasibility of Appropriate Technology for Crab Cultivation Using the Crab Ball Method As the Development of the Blue Economy Concept in Mangrove Areas”. Enrichment : Journal of Management, Vol. 13, no. 1, Apr. 2023, pp. 522-31, doi:10.35335/enrichment.v13i1.1275.