00454nam a2200133Ia 4500008004100000082003400041100008300075245004600158260002600204300001000230600002200240600002400262650003400286140224s9999    xx            000 0 und d  a632.682 1979.4.4/5 (082.2) M0  aConference on Understanding Agricultural Bird Problems, London, Apr.4-5, 1979.  aBird problems in agriculture; proceedings  aCroydonbBCPCcc 1980  a210p.  aWright, E.N., ed.  aEdited  E.N.Wright.  aBird control,Birds,Bird pests