Cleaning stone and masonry / 
James R. Clifton , Editor 
 - Philadelphia :  ASTM 1916 Race Street,  c 1986. 
 - ix, 176p. :  23cm. ; 
<br/><br/><label>ISBN: </label>0803109326 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Masonry-Cleaning-Congresses<br/>Building stones- Clening-Congresses
<br/><br/><label>Dewey Class. No.: </label>693.10288