Viray, Edilberto B., Jr. <br/><br/>
Principles of economics simplified :  with taxation and agrarian reform : revised edition with Train Law/ 
Edilberto B. Viray, Jr., Ma. Jesusa Avila-Bato, and Antonio Carlos B. Bautista 
 - Mandaluyong City:  Anvil Publishing,  c2018. 
 - ix, 222 pages :  illustrations ;  26 cm. 
<br/><br/>Includes bibliographical references, glossary, and index.