Subramanian, R P <br/><br/>
How come? how so? that's how things began: the inventions that changed our world 

 - New Delhi  The Energy Resource Institute  2014 
 - 45 
<br/><br/> Inventions have changed our world beyond imagination — from the simple mechanical clock to the television, telephone, computer, and microscope. Learn how it all began, where, when, and who were the pioneers in this book. 
<br/><br/><label>ISBN: </label>9788179935477 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Invention
<br/><br/><label>Dewey Class. No.: </label>J 608 SUB