The stone, clay, glass, and concrete products industry in Puerto Rico 
Economic Development Administration, Office of Economic Research, General Economic Division. 
 - San Juan, P.R.  La Administración  1996- 
 - 20, 8 p.  maps  28 cm. 
<br/><br/> "Group 32" Cover.  Cover title. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Concrete products industry--Economic aspects.--Puerto Rico<br/>Glass--Economic aspects.--Puerto Rico<br/>Clay--Economic aspects.--Puerto Rico<br/>Stone--Economic aspects.--Puerto Rico