Lesk, Michael <br/><br/>
Understanding digital libraries / 
Michael Lesk 
 - 2nd ed. 
 - Boston :  Elsevier,  2005 
 - xxxi, 424 p. :  ill., maps ;  24 cm. 
<br/><br/> Practical digital libraries, 2nd edition 
<br/><br/>References : p. 387-411 
<br/><br/><label>ISBN: </label>1558609245  RM172.83 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Libraries--Special collections--Computer files--United States<br/>Digital libraries--United States