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1per Redmond, Philip IvanMatèries “...Coal mines and mining New Zealand Grey District....”
Publicat 1978
Thesis Llibre -
2per Richardson, LenMatèries “...Coal mines and mining New Zealand Grey District....”
Publicat 1968
Thesis Llibre -
3
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4per Wright, Les, 1950-2013Matèries “...Coal mines and mining New Zealand Grey District History....”
Publicat 2000
Llibre -
5Publicat 2003Matèries “...Coal mines and mining New Zealand Grey District History....”
Llibre -
6
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7per Ewen, Peter, 1958-Matèries “...Coal mines and mining New Zealand Grey District History....”
Publicat 2006
Llibre -
8
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9Publicat 1993MatèriesLlibre
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10