A wonderful compilation on the state of construction technology , materials and methods from the period.
Plenty of images and diagrams, so this is NOT simply a "gray page" summary of formulas.
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This is a reprint of a very old book. Be forwarned that when copied all pages are did not come legible. There are some very cool early style fonts and a history of letters and the origins of them. ... Read More
American government; assignments and examination questions