Thursday, June 26, 2008

The pre-mechanical age

Praise be Jesus and Mary,
I had learned that the 4 basic period are the pre-mechanical age,the mechanical,the electromechanical,and the last one is electronic.
Pre-mechanical age, I had learned that the first human communicated only through speaking and simple drawings known as petroglyths.
By, Erwin Roy M. Bolando
IV-Aquino

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