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3. Beentjes, MP and Gilbert, DJ. 2006a.Bluecliffs Beach 2005 toheroa survey: yield per recruit and review of historical surveys, New Zealand Fisheries Assessment Report 2006/37 48
4. Beentjes, MP and Gilbert, DJ. 2006b.Oreti Beach 2005 toheroa survey: yield per recruit and review of historical surveys, New Zealand Fisheries Assessment Report 2006/36 47
5. Beentjes, MP, Gilbert, DJ and Carbines, GD. 2003.Oreti Beach 2002 toheroa survey: yield per recruit and review of historical surveys, New Zealand Fisheries Assessment Report 2003/9 36