NSTP (series) :  in the service of the nation / Herculano V. Sabas ... [and others]  - Valenzuela City :  Mutya Publishing House, Incorporated,  © 2007  - 215 pages :  illustrations ;  23 cm <br/><br/> Includes appendices. <br/><br/><label>LC Class. No.: </label>LC 220.5  / N8795 2007