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FACTORS AFFECTING SPECIES' RISK OF EXTINCTION: AN EMPIRICAL ANALYSIS OF ESA AND NATURESERVE LISTINGS
LABAND, DAVID N., (2006)
INDIVIDUAL SPECIES-STATE ANALYSIS OF NATURESERVE'S "AT-RISK" CATEGORIES: HUNTING AND FISHING'S ROLE
NIESWIADOMY, MICHAEL, (2009)
Factors affecting species' risk of extinction: an empirical analysis of ESA and natureserve listings
Laband, David N., (2006)