OSIECK ER (1990) Book reviews: Monval, J.-Y. ... (et al.), Results of the OWRB International Waterfowl Census 1967-1986, 1989. LIMOSA 63 (3): 118-119.

MONVAL J.-Y. & PIROT J.-Y. 1989. Results afthe IWRB International Waterfowl Census 1967-1986 (IWRB Special Publication 8) International Waterfowl and Wetlands Research Bureau, Slimbridge. 145 p.

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