Pritchard, J A T <br/><br/>
Quantitative methods in on-line systems 

 - Manchester:   NCC Publications,   1976 
 - x, 312p. 
<br/><br/><label>ISBN: </label>0-85012-129-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Online systems
<br/><br/><label>Subjects--Index Terms: </label>System design 
<br/><br/><label>Universal Decimal Class. No.: </label>681.3.022  / L6