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H. Blokpoel

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Stand Alone

Bird hazards to aircraft: Problems and prevention of bird/aircraft collisions
Atlas of colonial waterbirds nesting on the Canadian Great Lakes, 1989-1991
Atlas of colonial waterbirds nesting on the Canadian Great Lakes, 1989-1991. Part 3: Cormorants, gulls and island-nesting terns on the lower Great Lakes system in 1990
Atlas of colonial waterbirds nesting on the Canadian Great Lakes, 1989-1991
Le goéland à bec cerclé