Salcedo, Juan Sanchez, 1904- <br/><br/>
Road to national progress / 
by Juan Salcedo. 
 - 2nd ed 
 - Bicutan, Taguig, MM :  Science Foundation of the Philippines,  1978- 
 - v. : port. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Philippines