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Ardea Official journal of the Netherlands Ornithologists' Union |
| Voous K.H. (1965) Boekbespreking. International Council for Bird Preservation. 1964. Working conference on birds of prey and owls (Caen, 10-12 april 1964). ARDEA 53 (3-4): 241-242 |
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geen Nederlandse samenvatting beschikbaar op internet |