TY - RPRT TI - Abnormal loading on buildings and progressive collapse : an annotated bibliography AU - Leyendecker, E V AU - Breen, J E AU - Somes, N F AU - Swatta, M PY - 1976 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS BSS 67 DO - 10.6028/NBS.BSS.67 ER -