Johns, Ada Winifred <br/><br/>
Special libraries :  development of the concept, their organizations and their services / 
Ada Winifred Johns 
 - Metuchen, N.J. :  Scarecrow Press,  1968 
 - 245 p. ;  23 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> USD 6.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Special libraries<br/>Engineering libraries
<br/><br/><label>Dewey Class. No.: </label>026