TY - BOOK ED - U. S. National Bureau of Standards. National applied mathematics lab oratories. Computation Laboratory. TI - Table of circular and hyperbolic tangents PY - 1943///. repr. 1947 KW - Trigonometry KW - Tables N1 - Reproduced by a photo offset process; "Other tables prepared by the Mathematical tables project : [2] p. at end; Includes Bibliography of the tables of circular and hyperbolic tange ts and contangents and of closely related functions ER -