TY - RPRT TI - Comparison of codes, standards, and practices in use at the times of the design and construction of World trade Center 1, 2, and 7 AU - Razza, Joseph C AU - Grill, Raymond A PY - 2005 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST NCSTAR 1-1e DO - 10.6028/NIST.NCSTAR.1-1e ER -