Reports of the committee upon the physiology of hearing.
Ewing, Alex W. G.(Alexander William Gordon),1896-1980,author.
Ewing, Irene R.(Irene Rosetta),-1959,author.
Littler, T. S.,author.
Great Britain.His Majesty's Stationery Office.
Medical Research Council (Great Britain),issuing body.
"December 14, 1936".