TY  - BOOK
AU  - Haas, A. M.
TI  - Design of Thin Concrete Shells 2
U1  - 624.1776 
PY  - 1967///
CY  - New York : 
PB  - John Wiley, 
KW  - Concrete
N1  - NN; v. 2. Negative Curvature Index
ER  -