Information sources in science, technology and commerce  
/ Aslib  
 - London:   Aslib,   1977 
 - 634p.  
 - Aslib directory   Volume I  .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science 
<br/><br/><label>Subjects--Index Terms: </label>Commerce  
<br/><br/><label>Universal Decimal Class. No.: </label>D 026/027(058.7(410)  / L7.1