Parker, W J  <br/><br/>
Fire endurance of gypsum board walls and chases containing plastic and metallic drain, waste and vent plumbing systems   

 - Washington:   U.S Department of Commerce,   1975 
 - vi, 105p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Building materials
<br/><br/><label>Subjects--Index Terms: </label>Walls  Wood  
<br/><br/><label>Universal Decimal Class. No.: </label>691:614.841   / L5