Harper 3d, D. R. books & textbook

Department of Commerce and Labor. Bulletin of the Bureau of Standards. Vol. 11; A Wheatstone Bridge for Resistance Thermometry; pp. 571-590

Waidner, C. W. Dickinson, H. C. Mueller, E. F. Harper 3d, D. R.

Leopold Classic Library /2017-02-09 Paperback / 38 Pages

Bulletin of the Bureau of Standards, Vol. 8: Thermometric Lag: pp. 659-714

Harper, 3d, D. R.

Leopold Classic Library /2017-02-08 Paperback / 64 Pages