TY  - BOOK
AU  - Merriman, Mansfield
TI  - Text-book on roofs and bridges
U1  - D416 E9,F3.2 
PY  - 1923///
CY  - London
PB  - John Wiley & Sons, Inc.
KW  - Roofs and bridges
N1  - Includes Index
ER  -