Mandal, Pranab Performance evaluation of double slope solar still using phase change material / Pranab Mandal ; supervised by Vikas Verma. - Tezpur : Tezpur University, 2023. - vii, 44 p. : ill. ; 28 cm. Includes bibliographical references. Subjects--Topical Terms: EnergySolar energy--Research Dewey Class. No.: 621.042 / MAN