Spreading deserts--the hand of man

I tiakina i:
Ngā taipitopito rārangi puna kōrero
Kaituhi matua: Eckholm, Erik P.
Ētahi atu kaituhi: Brown, Lester Russell, 1934-
Hōputu: Pukapuka
Reo:Ingarihi
I whakaputaina: [Washington] [Worldwatch Institute] 1977
Rangatū:Worldwatch paper 13
Ngā marau:
Desertification
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Whakaahuatanga
Whakaahuatanga ōkiko:40 p. ill. 22 cm

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