by Woodyard, D.K, Haufler, J.B
Published in The Environment, problems, and solutions (USA) (1991)

by Siddhanti S.K
Published in The Environment--problems and solutions (USA) (1991)

by Olshansky R.B
Published in The Environment--problems and solutions (USA) (1990)

by Stavins, R.N
Published in The Environment--problems and solutions (USA) (1990)

by Makowski, E.H
Published in The Environment--problems and solutions (USA) (1990)

by Dubasek, M
Published in The Environment--problems and solutions (USA) (1990)

by Baker, B
Published in The Environment--problems and solutions (USA) (1990)

by O'Toole, C.K
Published in The Environment--problems and solutions (USA) (1990)