. . "MITCHELL" . "Mitchell, R. M. (Ross McGregor)" . "R. M Mitchell"@en-AU . . "Ross M. Mitchell" . "Mitchell" . "M." . "Mitchell, R. M. (Ross M.)" . "R." . . "R. M. Mitchell" . "Mitchell" . "Ross McGregor Mitchell" . "R.M Mitchell" . "R.M" . "McGregor" . "Mitchell R. M." . "M." . "Ross" . "R.M MITCHELL" . "R." . .