Symposium on mineral aggregates, 1948.  Fifty-first annual meeting, American Society for Testing Materials, 

 - Philadelphia  [1948] 
 - 233 p.  illus.  24 cm. 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>Aggregates (Building materials)<br/>MCE
<br/><br/><label>Dewey Class. No.: </label>620.191  / AME