Ashraf Aly Elkoushy <br/><br/>
Refinement of surveying data from blunders by L1 - norm techniques /  
 تنقية الارصاد المساحية من الغلط باستخدام طرق مجموع القيم المطلقة للأخطاء اقل ما يمكن 
Ashraf Aly Elkoushy ; Supervised Youssef I.Abdelaziz , Wilhelm Benning , Mohamed A.M.Somaida 
 - Port Said :   Ashraf Aly Elkoushy ,   1999 
 - 131LeavesP. :   charts ;   30cm 
<br/><br/>Thesis (Ph.D.) - Suez Canal University - Faculty Of Engineering , Port Said - Department Of Civil Engineering