BIJLSMA RG (1994) Boekbespreking: Bibby, C. ... (et al.), Bird census techniques. LIMOSA 67 (2): 83-83.

BIBBY c., BURGESS N. D. & HILL D. A. 1992. Bird Census Techniques. Academic Press Ltd., London. XVII + 257 p. ISBN 0.12.095830.9.

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