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261
262
by Ruiz Guadalajara, Juan Carlos.
Published 2005
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by Cañedo Andalia, Rubén.
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269
by Trabulse, Elías.
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270
by Rivera Hernández, Martha Patricia.
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271
272
by Fernández Rodríguez, Cristina.
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273
274
by Prades, Josep Lluís.
Published 2016
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275
La utilización de fichas durante la actividad científica una técnica indispensable pero olvidada.
by López Fernández, Ana Gloria.
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276
by Guerra de León, José Orestes.
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277
by Gómez-Rey, M. X.
Published 2009
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“...Science. Earth Science. General....”Published 2009
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278
279
by Gómez-Rey, M. X.
Published 2002
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280
by López Mateo, C.
Published 2002
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“...Science. Earth Science. General....”Published 2002
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