The economics of new educational media: present status of research and trends/

I tiakina i:
Ngā taipitopito rārangi puna kōrero
Hōputu: Pukapuka
Reo:Ingarihi
I whakaputaina: London: Unesco, c1977
Ngā marau:
Ngā Tūtohu: Tāpirihia he Tūtohu
Kāore He Tūtohu, Me noho koe te mea tuatahi ki te tūtohu i tēnei pūkete!