J. Wayne Wrightstone & John R. Clark.
End of course test in Air conditioning, heating, and ventilating. Course no. EM 978.
R559309. End of course test in Air conditioning, heating, and ventilating. Course no. EM 978. By J. Wayne Wrightstone & John R. Clark. © 1Jul46; AA58171. Educational Testing Service (PWH); 4Sep73; R559309.
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