TY  - BOOK
AU  - Worcester,Wolsey Garnet
AU  - Orton,Edward
ED  - Geological Survey of Ohio.
TI  - The manufacture of roofing tiles
T2  - Bulletin
AV  - QE151 .A18 no. 11
PY  - 1910///
CY  - Columbus, Ohio
PB  - Geological Survey of Ohio
KW  - Tiles, Roofing
N1  - Includes bibliographical references and index
ER  -