Amtrak's productivity on track rehabilitation is lower than other railroads'--precise comparison not feasible : report / by the Comptroller General of the United States
Cover title. Mar. 13, 1981. "CED-81-60." "B-201019"--Prelim. p.
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Microfiche. Washington, D.C. : U.S. G.P.O., 1981. 1 microfiche : negative ; 11 x 15 cm.
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