Muna, Z. et al. 2025. Relationship Between Mangrove Condition and Socio-economic Livelihoods of Fishermen Traps in Central Tapanuli. International Journal of Marine Engineering Innovation and Research. 9, 4 (Jul. 2025), 804–808. DOI:https://doi.org/10.12962/j25481479.v9i4.4842.