Proceedings of a seminar on the durability of insulating glass : held at the National Bureau of Standards Gaithersburg, Maryland, November 14-15, 1968 

 - Washington, D.C. :  U.S. Dept. of Commerce, National Bureau of Standards : U.S. G.P.O.,  1970. 
 - 	vi, 79 p. :  ill. ;  26 cm. 
 - 	NBS building science series ;  no. 20. .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sealed double glazing--Congresses<br/>Glass--Congresses.<br/>Insulating materials--Congresses.
<br/><br/><label>Dewey Class. No.: </label>666.12