Discussion on "The telephone service of large cities, with special reference to London" before the Institution, 15 May, 1919

William Slingo;J.E. Kingsburg;C.B. Clay;A.M. Ogilvie;Charles A. Baker;J. Hedley;A.H. Preece;A.J. Stubbs;F.M. Ward;B.O. Anson;W. Aitken;F.G.W. Baldwin;W.W. Cook;T.B. Johnson;W.A.J. O´Meara;P.G. Pettifor;E.A. Laidlaw;W.H. Grinsted

jour