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© y ® Alfredo Martirena

© & ® Alfredo Martirena
May 2004

© & ® Alfredo Martirena
Mar 2004


© & ® Alfredo Martirena
January 2004

© & ® Alfredo Martirena
December 2003



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October 2003


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August 2003
Derechos Reservados - Alfredo Martirena
July 2003
Derechos Reservados - Alfredo Martirena
June 2003
Derechos Reservados - Alfredo Martirena
May 2003
Derechos Reservados - Alfredo Martirena
April 2003
Derechos Reservados - Alfredo Martirena
February 2003

Derechos Reservados - Alfredo Martirena
January 2003


Derechos Reservados - Alfredo Martirena
December 2002


Derechos Reservados - Alfredo Martirena

November 2002
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Consultants

Fernando Martirena
Cuban
Civil Engineer, PhD. Professor.
Spanish, English, German.
Research and investigation of materials, specifically alternative cement and cement products.

Videos

Molino de lodo: testimonio
Earth mill for fired clay bricks - Testimony (spanish only)
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