TY  - BOOK
TI  - Cleaning stone and masonry
SN  - 0803109326
U1  - 693.10288 
PY  - 1986///
CY  - Philadelphia
PB  - ASTM 1916 Race Street
KW  - Masonry-Cleaning-Congresses
KW  - Building stones- Clening-Congresses
ER  -