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|a Gortari, Elí de
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| 245 |
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|a El método de las ciencias:
|b nociones elementales /
|c Elí de Gortari.
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| 250 |
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|a 10a. ed.
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| 260 |
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|a México, D.F. :
|b Grijalbo,
|c 1979
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| 300 |
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|a 151 p.
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| 440 |
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|a Tratados y manuales grijalbo
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| 650 |
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|a Metodología científica
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| 650 |
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|a Hipótesis
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| 650 |
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|a Diseño experimental
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| 650 |
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|a Ciencia-metodología
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| 991 |
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|a der_mauda
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| 992 |
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|a 11/09/2006
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| 942 |
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