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Academia.edu is a place to share and follow research.

The National Academies Press (NAP) publishes authoritative reports issued by The National Academies of Science, Engineering, and Medicine (NASEM).

European Open Science Infrastructure, for open scholarly and scientific communication

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Springer - Our business is publishing. Throughout the world, we provide scientific and professional communities with superior specialist information;

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Sistema de Información Científica Redalyc. Red de Revistas Científicas. Acceso abierto sin fines de lucro propiedad de la academia.

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