Walker, G S <br/><br/>
Control of DP production / 
G.S. Walker 
 - Manchester :  NCC Publications ,  1979 
 - 121 p. :  ill. ;  21cm 
<br/><br/><label>ISBN: </label>0850122279 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic data processing departments--Management