Arifah, Wanda Sholihatul, Ahmad Faisal Syafrudianto, Retno Wulandari, Hammam Agustapraja, and Samsul Arif. 2025. “Analysis of Investment in Istana Ababil Babat Lamongan Housing Using the BCR Method”. Intregrative Health, Environment, And Engineering Sciences 1 (01):1-7. https://doi.org/10.30736/ihees.v1i01.870.