http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Origins of pest, parasite, disease and weed problems
the 18th Symposium of the British Ecological Society, Bangor, 12-14 April 1976
edited by J. M. Cherrett and G. R. Sagar.
Symposium of the British Ecological Society ; no. 18