by Riddell, D.C. (David Campbell);
Freestone, H.J. (Horace John);
-- Southland (N.Z.)Regional Council. Waiau Working Party.;
Works Consultancy Services Ltd
by Livingston, Mary E. (Mary Elizabeth);
Biggs, Barry John Franklyn;
Gifford, John S.
-- New Zealand Water and Soil Directorate.;
New Zealand National Water and Soil Conservation Authority
by Smale, D.
-- New Zealand Dept. of Scientific and Industrial Research;
New Zealand Geological Survey;
New Zealand Geological Survey