00942nam a2200277 a 4500 69554 BD-RjUL 20211209081913.0 730727s1947 nyua b 001 0 eng (BD-RjUL)69766 DLC OUN OCL m.c. MYG BD-RjUL eng eng 23 621.386 POV 1947 Potter, Ralph Kimball, 1894- 206015 Visible speech / [by] Ralph K. Potter, George A. Kopp and Harriet C. Green. 1st ed. New York : D. Van Nostrand Co., 1947. xvi, 441 p. : ill. ; 28 cm. Bell Telephone Laboratories series Includes Bibliography and index Telephone Equipment and supplies. 206016 Kopp, George Adams, 1900-1968. 206017 Kopp, Harriet Green, 1917- 206018 Bell Telephone Laboratories series. 206028 ddc BK 69554 69554 0 0 ddc 0 1 NFIC RUCL RUCL Reading 1958-02-11 U. S. Govt. 0.00 0 621.386 POV 1947 2017-04-12 00:00:00 C-1 2017-04-12 BK