McGraw-Hill Encyclopaedia of Science and Technology  vol. 14, TOL-ZYT 
McGraw-Hill  
 - New York  McGraw-Hill  1977 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy and Astrophysics Thesaurus<br/>Encyclopedia-Science & Technology<br/>Science & Technology Encyclopedia
<br/><br/><label>Universal Decimal Class. No.: </label>31.5  / MES-14