Ubaid Ullah Study the solar pumping system and its economic comparison with diesel operated pumps : MPhil Physics Ubaid Ullah - Islamabad: Allama Iqbal Open University, 2021. - 72p. HB Eng Standard No.: https://i.ibb.co/DcNFC41/Thesis-cover.png Subjects--Topical Terms: Dissertations, Academic-- MPhil Physics Dewey Class. No.: 523.2 / UBS