Concrete Planet Katharina I. Boser Forty years old

Forty years old

In these inspired lectures from 1923

Will they find their way through it

and reading specialists

and grammar

Concrete Planet Katharina I. Boser Forty years oldConcrete: We use it for our buildings, bridges, dams, and roads. We walk on it, drive on it, and many of us live and work within its walls. But very few of us know what it is. We take for granted this ubiquitous substance, which both literally and figuratively comprises much of modern civilization's constructed environment; yet the story of its creation and development features a cast of fascinating characters and remarkable historical episodes. This