@book{94940,
	author = {Thresh, J.M., ed.},
	title = {Pests pathogens and vegetation; the role of weeds and wild plants in the ecology of crop pests and diseases},
	publisher = {Pitman},
	year = {c 1981},
	series = {At the head of title: Association of Applied Biologists},
	address = {Boston}
}