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Roskruge, Nick (2010). Ngā pōrearea me ngā matemate o ngā māra taewa = Pests and diseases of taewa (Māori potato) crops. Puketapu, Aleise., McFarlane, Turi R., Massey University. Institute of Natural Resources. Palmerston North, N.Z.: Institute of Natural Resources. ISBN9780473176136. OCLC671920229.