How the #AncientRomans Made Better Concrete Than We Do Now
http://io9.com/how-the-ancient-romans-made-better-concrete-than-we-do-1672632593
Verona - Italy New York, NY - U.S.A.
Education is your shield and trophy
Verona - Italy New York, NY - U.S.A.
Education is your shield and trophy
How the #AncientRomans Made Better Concrete Than We Do Now
http://io9.com/how-the-ancient-romans-made-better-concrete-than-we-do-1672632593