Phosphate rock availability-world : a minerals availability program appraisal /

I tiakina i:
Ngā taipitopito rārangi puna kōrero
Kaituhi rangatōpū: United States Bureau of Mines
Ētahi atu kaituhi: Fantel, R. J. (Richard J.)
Hōputu: Pukapuka
Reo:Ingarihi
I whakaputaina: Washington : U.S. Dept. of the Interior, Bureau of Mines, 1984.
Rangatū:Information circular ; 8989
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