Willis, Arthur J. <br/><br/>
Specification Writing for Architects and Surveyors / 
A.J. Willis & Ch.J. Willis. 
 - Seventh Edition 
 - London :  Granada Publishing Ltd,  1979. 
 - 98 p. 
<br/><br/><label>ISBN: </label>0-258-97142-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ճարտարապետություն