by Nelson, Paul R., Conrad, Fred W., Kelly, Susan P., Maiolo, Katherine C., Richardson, Joel D., Ogden, Michael W.
Published in Environment international (1997)

by Nelson, Paul R., Conrad, Fred W., Kelly, Susan P., Maiolo, Katherine C., Richardson, Joel D., Ogden, Michael W.
Published in Environment international (01.04.1998)

by Ogden, M W, Eudy, L W, Heavner, D L, Conrad, Jr, F W, Green, C R
Published in Analyst (London) (1989)

by NELSON, P. R, KELLY, S. P, CONRAD, F. W
Published in Journal of the Air & Waste Management Association (1995) (01.04.1998)

by Ogden, Michael W., Heavner, David L., Foster, Travis L., Maiolo, Katherine C., Cash, Sheila L., Richardson, Joel D., Martin, Patricia, Simmons, Paula S., Conrad, Fred W., Nelson, Paul R.
Published in Environmental technology (01.03.1996)