Ahmad, Nazir Designing low cost tube wells for East Pakistan / Nazir Ahmad - Lahore : PAAS , 1961 - 240-249p. ; 24 cm. - Reprinted from Pakistan Journal of Science, Vol. 13, No. 5, September, 1961 . Subjects--Topical Terms: AgricultureTubewellsIrrigation Dewey Class. No.: 631.7 / AHM-6