The logarithmic integral / 
Koosis, Paul. 
 - Cambridge ; | New York :  Cambridge University Press,  1988 
 - 2 v. :  ill. ;  24 cm. 
 - Cambridge studies in advanced mathematics ;  12, 21 .
<br/><br/><label>ISBN: </label>0521596726 (v. 1) | 9780521102544 (v. 2)