TY - RPRT TI - A performance approach to the development of criteria for low-sloped roof membranes AU - Rossiter, Walter J Jr AU - Frohnsdorff, Geoffrey AU - Masters, Larry W AU - Martin, Jonathan W PY - 1991 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST IR 4638 DO - 10.6028/NIST.IR.4638 ER -