Echo Sounding: Discussion
Charles Close, Mr. Matthews, H A Hughes, S. W. Kemp, H. G. Lyons, Lieut.-Commander Gould, Gerald Ponsonby Lenox-Conyngham, L. C. Bernacchi, H. P. Douglas · Geographical Journal · 1929
Charles Close, Mr. Matthews, H. A. Hughes, S. W. Kemp, Henry Lyons, Lieut.-Commander Gould, Gerald Lenox-Conyngham, L. C. Bernacchi, H. P. Douglas, Echo Sounding: Discussion, The Geographical Journal, Vol. 74, No. 1 (Jul., 1929), pp. 55-60