The New Encyclopaedia Britannica. 

 - 15th ed. 
 - Chicago :  Encyclopedia Britannica, inc.,  [1975] 
 - 30 v. :  ill. ;  29 cm. 
<br/><br/> The Micropaedia and Macropaedia are numbered v. 1-10 and v. 1-19, respectively. 
<br/><br/>Includes bibliographies and index. 
<br/><br/>[1] Propaedia: outline of knowledge and guide to the Britannica.--[2] Micropaedia: ready reference and index. 10 v.--[3] Macropaedia: knowledge in depth. 19 v. 
<br/><br/><label>ISBN: </label>085229297X 
<br/><br/><label>LCCN: </label>74076965  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedias and dictionaries.
<br/><br/><label>LC Class. No.: </label>AE5  / .E363 1975 
<br/><br/><label>Dewey Class. No.: </label>031