Performance Pumping Machinery : Reports on trials of duty and capacity of the pumping engines no. 2, at Ridgewood, and of no. 1, at Prospect Hill, made in 1861-'2 / [Frederick Graff, W.E. Worthen, Erastus W. Smith].
Performance rating (of employees) -- See Employees Rating of --subdivision Rating of under classes of persons and subdivision Officials and employees--Rating of under names of countries, cities, etc., and under individual government departments, agencies, etc.