Hatt, William Kendrick. <br/><br/>
Laboratory Manual of Testing Materials 

 - 1a ed, 5a reimp 
 - New York :   McGraw-Hill,   1926. 
 - p. 182 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MATERIALES<br/>INSPECCION DE MATERIALES
<br/><br/><label>Universal Decimal Class. No.: </label>620.11