Directory of Canadian scientific and technical databases 

 - Canada:   Canada Institute for Scientific and Technical Information,   1984 
 - 91p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Directory
<br/><br/><label>Universal Decimal Class. No.: </label>D 681.3.022:5/6](71)(058.7)  / M4