McLachlan, David J. <br/><br/>
Data processing / 
[by] David J. McLachlan [and] Bertram Molsom. 
 - London ;  New York :  McGraw-Hill,  1967. 
 - viii, 202 p.:  illus.;  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Business--Data processing.<br/>Punched card systems.<br/>Bookkeeping.
<br/><br/><label>Dewey Class. No.: </label>651.8  / MCD 1967