Documents 14 th Century –Invented by the Chinese, the first record of the abacus (from the Greek word...

Slide 1 14 th Century –Invented by the Chinese, the first record of the abacus (from the Greek word "ABAX", meaning "calculating board" or "calculating…

Documents Keys to Understanding the Census Or just about any survey .

Demystifying Census Resources - A Practical Overview of What's There and How to Use it Keys to Understanding the Census Or just about any survey. Content Products Geography…