TY  - BOOK
AU  - Norris, Charles head  .
AU  - John,benson  .
AU  - Ukku,senol  .
TI  - Elementary structural  analysis / 
U1  - 624.171 
PY  - 1977///
CY  - Auckland : 
PB  - Mcgraw-hill book co. , 
ER  -