The value of birds : based on the proceedings of a Symposium and Workshop held at the XIX World Conference of the International Council for Bird Preservation, June 1986, Queens University, Kingston, Ontario, Canada. - Diamond, A. W.; Filion, F. L.; International Council for Bird Preservation. World Conference 1986 : Kingston, Ontario) (Cambridge : International Council for Bird Preservation, 1987)
Keywords: Birds, Protection of