@booklet {301,
	title = {Life Beneath Our Feet: Research Challenges in Soil Biodiversity},
	year = {2009},
	url = {http://eusoils.jrc.ec.europa.eu/ESDB_Archive/eusoils_docs/Poster/AAASBiodiversity.pdf},
	author = {Simon Jeffery and Ciro Gardi}
}
@booklet {300,
	title = {Soil biodiversity},
	year = {2011},
	url = {http://eusoils.jrc.ec.europa.eu/ESDB_Archive/eusoils_docs/Poster/BiodiversityAU.pdf},
	author = {Paul Henning Krogh and Arwyn Jones and Luca Montanarella and Ciro Gardi and Simon Jeffery}
}
