Menghwar, Velaram. Improvement in safety during construction and operation of dug wells : a case study of Tharparkar, Sindh province / Velaram Menghwar. - MUET, Jamshoro : Civil Engineering, 2019. - xiv, 78p. : ill. ; 30 cm. Includes References. Subjects--Topical Terms: Construction Engineering. Dewey Class. No.: / MEN