1975 Britannica book of the year 

 - Chicago :  University of chicago ;  1975 
 - 768 p :  il ;  28 cm 
<br/><br/><label>ISBN: </label>0-85229-303-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Genaral encyclopaedic works
<br/><br/><label>Dewey Class. No.: </label>030