Watson, John A. <br/><br/>
Commercial roofing systems / 
John A. Watson 
 - Reston, Va.  Reston Pub. Co.  1984 
 - v, 233 p.  ill.  25 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0835908577  RM82.50 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Commercial buildings--Roofs<br/>Roofing