Environmental Chemistry of Herbicides

Raj (Agriculture Canada, Regina, SK, Canada) Grover

Het Nationale park De Hoge Veluwe

Menno Haanstra e.a.

Agrarisch natuurbeheer in Nederland

Dead Zones

Kirchman, David L. (Maxwell P. and Mildred H. Harrington Professor of Marine Studies, Maxwell P. and Mildred H. Harrington Professor of Marine Studies, University of Delaware)