Yazar
fritz van emden
12 cilt bulundu.
Helmut Fritz Van Emden, H. F. Van Emden, M. W. Service · Cambridge University Press
362 sayfa · 2004
Biological control / Control / Environmental aspects / Environmental aspects of Pesticides / Pesticides
Helmut Fritz Van Emden, H. F. Van Emden, David B. Peakall · Chapman & Hall
322 sayfa · 1996
Control / Environmental aspects / Environmental aspects of Pesticides / Pesticides / Pests
Helmut Fritz Van Emden · E. Arnold
117 sayfa · 1989
Biological control / Control / Environmental aspects / Environmental aspects of Pesticides / Insect pests
Helmut Fritz Van Emden · Blackwell Scientific [for] the Royal Entomological Society
215 sayfa · 1973
Congresses / Insect-plant relationships
Helmut Fritz Van Emden · CABI North American Office
717 sayfa · 2007
Control / Agricultural pests / Aphididae / Aphids / Pesticides
Helmut Fritz Van Emden · Edward Arnold
60 sayfa · 1974
Control / Pesticides / Environmental aspects / Pests
Otto Thomas Solbrig, Helmut Fritz Van Emden · International Union of Biological Sciences
224 sayfa · 1992
Social aspects / Biodiversity / Biodiversity conservation / Congresses / Global environmental change