Library effectiveness  a systems approach 
Philip M Morse  
 - Cambridge  Massachusetts Institute of Technology Press  1968  
 - p. 
<br/><br/><label>ISBN: </label>262130386 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library science--Mathematical models
<br/><br/><label>LC Class. No.: </label>Z678  / .M67 1968