T. R. Harrod
Soil Survey of England & Wales
Dorset County Council
B. W. Avery
Shipham Survey Committee
R. Webster
Portesham Environmental Studies Pilot Scheme
Derek Charles Findlay
L. F. Curtis
John Percival
S. J. Staines
D. V. Hogan
South West England Soils Discussion Group
B. Clayden
John Ayrton Paris