TY  - RPRT
TI  - Post-construction modifications to fire protection and life safety systems of the World Trade Center towers 
AU  - Grill, Raymond A
AU  - Johnson, Duane A
PY  - 2005
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - NIST NCSTAR 1-1h
DO  - 10.6028/NIST.NCSTAR.1-1h
ER  -