by Norman F. Braaten and Charles E. McCombs

G.P.O. 1938 Special publication no. 210

Available at 1 libraries

by H. Herbert Howe and David G. Knapp

U. S. Government printing office 1938 Serial / Department of Commerce U.S. coast and geodetic survey no. 602

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U.S. Department of Commerce, Coast & Geodetic Survey

U. S. Government printing office 1937 4th ed. Serial / Department of Commerce U.S. coast and geodetic survey no. 595

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by E.J. Brown

G.P.O. 1936 Special publication no. 204

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by Hugh C. Mitchell

G.P.O. 1936 Special publication no. 202

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by Oscar S. Adams, senior mathematician

U.S. Government Printing Office 1936 Serial / Department of Commerce U.S. coast and geodetic survey no. 584

Available at 2 libraries

by J.H. Brittain

G.P.O. 1935 Serial / Department of Commerce U.S. coast and geodetic survey no. 583

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by H.P. Kaufman

G.P.O. 1935 Special publication no. 198

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by Oscar S. Adams and Charles N. Claire

G.P.O. 1935 Special publication no. 194

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by Hugh C. Mitchell

G.P.O. 1935 Special publication no. 189

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