WRIGHTSTONE, J. WAYNE.
End-of-course test in Locomotive firing and accessories. Course no.J423. Prepared by J. Wayne Wrightstone & John R. Clark.
WRIGHTSTONE, J. WAYNE. End-of-course test in Locomotive firing and accessories. Course no.J423. Prepared by J. Wayne Wrightstone & John R. Clark. © 15Dec45; AA13479. Educational Testing Service (PWH); 2Jan73; R542199.
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