http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Chemistry of Europe's agricultural soils
Bundesanstalt fur Geowissenschaften und Rohstoffe (BGR)
2 τ : εικ. ; 29 εκ + 1 οπτικοακουστικό δίσκο Η/Υ (DVD).
τ. 1. Methodology and interpretation of the GEMAS data set -- τ. 2. General background information and further analysis of the GEMAS data set.