The control of eutrophication of lakes and reservoirs. /

I tiakina i:
Ngā taipitopito rārangi puna kōrero
Hōputu: Pukapuka
Reo:Ingarihi
I whakaputaina: Paris; Unesco: The Parthenon, c1989.
Ngā marau:
Ngā Tūtohu: Tāpirihia he Tūtohu
Kāore He Tūtohu, Me noho koe te mea tuatahi ki te tūtohu i tēnei pūkete!