<nowiki>Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; T. Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; Theunis Piersma; ahli biologi asal Kerajaan Belanda; Dutch biologist and university professor; niederländischer Ornithologe; Nederlands bioloog; T. Piersma; T Piersma; Piersma; Piersma T.; Piersma T; T. Piersma</nowiki>