TY - RPRT TI - Energy prices and discount factors for life-cycle cost analysis : annual supplement to NBS Handbook 135 and NBS Special Publication 709 1987 edition AU - Lippiatt, Barbara C AU - Ruegg, Rosalie T PY - 1987 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS IR 85-3273-2 DO - 10.6028/NBS.IR.85-3273-2 ER -