The graphic analysis of labor

Mathematics of Statistics.

J. H. Curtiss, J. F. Kenney · American Mathematical Monthly · 1940 · 493 citations

Engineering, Statistical Foundation, Statistical Evidence +4

Empirical Equations and Nomography.

Z. W. Birnbaum, Dale S. Davis · American Mathematical Monthly · 1945 · 25 citations

Statistical Inference, Empirical Equations, Statistics +1

The length of labor

L.A. Calkins, Jennings C. Litzenberg, E.D. Plass · American Journal of Obstetrics and Gynecology · 1931 · 23 citations

Productivity, Economics, Labour Supply +14

Variation in the length of labor

L.A. Calkins, Jed H. Irvine, Guy W. Horsley · American Journal of Obstetrics and Gynecology · 1930 · 21 citations

Economics, Labour Supply, Workforce Development +10

On predicting the length of labor

L.A. Calkins · American Journal of Obstetrics and Gynecology · 1941 · 21 citations

Productivity, Economics, Workforce Development +9