a Bello,Yusuf <br/><br/>
\a Developing inventory models for non-instantaneous deteriorating items with two-phase demand rate and shoatages  \h (Text) 
by Bello Yusuf 
 - \a Zaria :  \b Dept. of mathematics,  \c 2021 
 - \a xvi,88p.:  \b Ills 
<br/><br/>\a Thesis (M.Sc.) A.B.U,Zaria 
<br/><br/>\a Includes Bibliographical reference 
<br/><br/><label>LC Class. No.: </label>\a QA 306 Bel