au.\*:("WALK, J. W")
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Response of Northern Harriers and short-eared owls to grassland management in IllinoisHERKERT, J. R; SIMPSON, S. A; WESTEMEIER, R. L et al.The Journal of wildlife management. 1999, Vol 63, Num 2, pp 517-523, issn 0022-541XArticle
