http://neojaponisme.com/2007/12/13/ask-an-architect-concrete-facades/
patent on modular concrete form system and method for constructing concrete walls
http://www.freepatentsonline.com/5836126.html
architectural world: concrete
http://architectural-world.blogspot.com/2008/05/concrete.html
concrete basics:
http://www.concrete.net.au/publications/pdf/concretebasics.pdf
