Lloyd, Sheldon G. Industrial process control [electronic resource] / by Sheldon G. Lloyd [and] Gerald D. Anderson.. — 1st ed.. — Marshalltown, Iowa, : Fisher Controls Co., [1971]. — v, 272 p. : illus. 27 cm. Includes bibliographies. Subjects--Topical Terms: Process control.Fluid mechanics. LC Class. No.: TS156.8 / .L65x