Grimm and De Tores, 2009Grimm H.I., De Tores P.J., Some aspects of the biology of the common brushtail possum (Trichosurus vulpecula) and the threatened western ringtail possum (Pseudocheirus occidentalis) in a pine plantation scheduled for harvesting and in adjacent tuart and peppermint woodland near Busselton, Western Australia, Report prepared for the Forest Products Commission Government of Western Australia, 2009