a Sabiu, Bilal \a Investigation and Enhancement of the Quality of Nigerian Bentonitic Clay Samples for Oil and Gas Drilling Operations \h 2016 \c / by Bilal Sabiu - \a Zaria: \b Dept. of Chemical Engineering, ABU \c 2016 - \a xxx,234leaves.: \b ill. \a Faculty of Engineering \a Includes bibliographical references LC Class. No.: \a TN 948.B4 Sab / \b 508748