Estimator's Piping Man-Hour Manual (Estimator's Man-Hour Library)
Estimator's General Construction Manhour Manual (Estimator's Man-Hour Library)
Estimator's Electrical Man-Hour Manual (Estimator's Man-Hour Library)
Cost Estimating Manual for Pipelines and Marine Structures (Estimator's Man-Hour Library)
Estimator's Piping Man-hours Tool: Estimating Man-hours for Process Piping Projects. Manual of man-hours, Examples
Industrial Piping and Equipment Estimating Manual