Template:Hogg and Morton 1983
Hogg, E. H. and J. K. Morton (1983). The effects of nesting gulls on the vegetation and soil of islands in the Great Lakes. Canadian Journal of Botany 61: 3240-3254.
Hogg, E. H. and J. K. Morton (1983). The effects of nesting gulls on the vegetation and soil of islands in the Great Lakes. Canadian Journal of Botany 61: 3240-3254.