TY  - BOOK
AU  - Pippard,Alfred John Sutton
AU  - Chitty,Letitia
TI  - A study of the voussoir arch,
T2  - National building studies. Research paper,
U1  - 624.1775 
PY  - 1951///
CY  - London
PB  - H. M. Stationery Off.
KW  - Arches
KW  - MCE
N1  - 0; 0; 0; 624_177500000000000_PIP
ER  -