Ba-raadi, . A. , Al-Saggaf, M.A. and Al-Guhi, M.S. (trans.) (2023) “A Comparative Study of the Productivity and Efficiency of Thermo-Solar Collector Models in Different Climatological Conditions in Some Regions in Yemen”, Thamar University Journal of Natural & Applied Sciences, 2(1), pp. 1–11. doi:10.59167/tujnas.v2i2.1276.