Smith, Keith. Water resources of Nidderdale. - Liverpool : University of Liverpool, 1966. - 58 p. : ill., maps ; 23 cm. - Liverpool University, Dept. of Geography Research paper ; no.4 . Includes bibliography; p.53-58. Subjects--Topical Terms: Water resources development--Niderdale Eng. Dewey Class. No.: P91:33.91 (4274) S75