by Billmeyer, Fred W., Jr.
by Sigrist, Markus W.
by -- Food and Agriculture Organization of the United Nations
by Marasco, Richard J.
by Batstone Chris;
-- New Zealand Ministry of Fisheries.;
by -- United States Office of Water Regulations and Standards
by -- Natural Environment Research Council (Great Britain)
by Griffin, Desmond John Gerald;
by Covey, Stephen R.