a Asuku, Abdulsamad \a Control Rod Calibration of Nigeria Research Reactor -1[N1RR-1]Using Positive Period Method \h [Text] \c by Abdulsalam Asuka - \a Zaria. \b Department of Physics,ABU. \c 2015 - \a x,74 Leaves.: \b ill. \a Faculty of Sciences \a Includes bibliographical references LC Class. No.: \a QC786.5 ASU / \b 499907