Hudson, Richard Francis Burrows. <br/><br/>
Simulation of an on-line file for a library circulation system / 
R. F. B. Hudson. 
 - University of Bristol :  South West University Libraries System Co-operation Project,  1973. 
 - 66 p. :  ill. ;  30 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Libraries--Circulation, loans.<br/>On--line data processing.