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    <subfield code="a">Rodriguez, J. C.</subfield>
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    <subfield code="a">Estudio geol&#xF3;gico-econ&#xF3;mico con aplicaci&#xF3;n de criterios estad&#xED;sticos del yacimineto de minerales de cobre "Mart&#xED;n Bronce". Dpto. Sta. B&#xE1;rbara. Pcia. de Jujuy.</subfield>
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    <subfield code="a">Relevamiento: 1981.</subfield>
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    <subfield code="a">The present wort, done in the "Mart&#xED;n Bronce" copper mine, has as its objective to estimate:-a) The optimum distance of sampling; -b) The average copper content; -c) Standar deviation, and cubing: for which statistical methods of calculations have been used. Further objetives are: to draw conclusions as to the deposit and, in this way, be able to estimate its economical possibilities.</subfield>
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    <subfield code="t">Revista del Instituto de Ciencias Geol&#xF3;gicas</subfield>
    <subfield code="g">no.4,. p.123-142</subfield>
    <subfield code="x">0326-9817</subfield>
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