Abū al-ʻAbbās, Aḥmad. <br/><br/>
al-Taqrīb wa-al-taqdīr al-taqrībī. 

 -  1963. 
 - 342 p.  diagrs., tables.  24 cm. 
<br/><br/>Includes bibliography. 
<br/><br/><label>LCCN: </label>ne 64001158  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Approximation theory.<br/>Mathematics--Study and teaching.
<br/><br/><label>LC Class. No.: </label>QA221  / .A2