TY - RPRT TI - Energy prices and discount factors for life-cycle cost analysis 1991 : annual supplement to NBS Handbook 135 and NBS Special Publication 709 AU - Lippiatt, Barbara C AU - Ruegg, Rosalie T PY - 1990 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST IR 85-3273-5 DO - 10.6028/NIST.IR.85-3273-5 ER -