Elements of the natural movement of population/

I tiakina i:
Ngā taipitopito rārangi puna kōrero
Kaituhi matua: VIELROSE, Egon
Hōputu: Pukapuka
Reo:Ingarihi
I whakaputaina: Oxford: Pergamon; 1965.
Ngā Tūtohu: Tāpirihia he Tūtohu
Kāore He Tūtohu, Me noho koe te mea tuatahi ki te tūtohu i tēnei pūkete!