Al hagan, Abd El-azez, <br/><br/>
Accounting for research and development costs and it's effect firms performance / 
Abdalaziz Alhaggan. 
 - Cairo :  6th October University,  2018. 
 - 78 p. :  ill. ;  30 cm. 
<br/><br/> Correct author name : El-azez Al hagan. 
<br/><br/>includes bibliographic reference 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cost accounting<br/>Managerial accounting.<br/>Accounting.
<br/><br/><label>Dewey Class. No.: </label>657.42  / AA