nangolo w., gnitchogna r.b., gideon f., lungu e. M O D E L I N G O I L P R I C E S I N N A M I B I A N M A R K E T U S I N G Q U A N T I TAT I V E T E C H N I Q U E S. as [Internet]. 2017Jul.31 [cited 2024Nov.23];3(7):12-6. Available from: http://13.234.104.160/index.php/as/article/view/1306