Biblioteca San Esteban Salamanca catalog › Results of search for 'an:"269666"'

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	1.	No cover image available Activadores génicos / Mark Ptashne by Ptashne, Mark. Source: Investigacion y Ciencia (Traducción de: Scientific American) nº. 150, 1989, págs. 18-24Material type: Article; Format: print Language: Spanish Availability: Items available for loan: (1).
	2.	No cover image available Un interruptor genético en un virus bacteriano / Mark Ptashne, A. D. Johnson, Carl O. Pabo by Ptashne, Mark \| Johnson, A. D \| Pabo, Carl O. Source: Investigacion y Ciencia (Traducción de: Scientific American) nº. 76, 1983, págs. 50Material type: Article; Format: print Language: Spanish Availability: Items available for loan: (1).