TY  - GEN
AU  - Sansalone, Mary.
TI  - Impact-echo: non-destructive evaluation of concrete and masonry 
SN  - 0961261064 (alk. paper)
U1  - 620.1367 SAN 
PY  - 1997///
CY  - Ithaca, N.Y.
PB  - Bullbrier Press
KW  - Concrete
KW  - Testing
KW  - Nondestructive testing
KW  - Masonry
ER  -