Modern day inventions. 

 - [Mandaluyong City] :  National Bookstore, 
 -  1 chart: colored; 38 x 53 cm. 
<br/><br/><br/>English 
<br/><br/><label>ISBN: </label>Chart 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Inventions
<br/><br/><label>LC Class. No.: </label>600 M72 c?