a Michaels, Segun Peter \a Hydrogeology and Groundwater Quality of Dutsen Wai Sheet 125 NE, North West Nigeria \h [Text] \c by Segun Peter Michaels - \a Zaria: \b Dept. of Geology, ABU \c 2018 - \a xii,130leaves.: \b ill. \a Faculty of Physical Sciences \a Includes bibliographical references LC Class. No.: \a QE 45 Mic / \b 510936