Studying the Performance of Back–Pass Plain Plate Solar Air Heating Un-Glazed Collector. J. eng. sustain. dev. [انترنت]. 1 ديسمبر، 2011 [وثق 18 مايو، 2024];15(4):135-54. موجود في: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1313