REVOCATION OF DEPARTMENT ORDER NO. 6-99 (DATED 26 JANUARY 1999), ENTITLED “DEFINING THE AUTHORITY OF THE COMMISSIONER OF INTERNAL REVENUE AND REGIONAL DIRECTORS, RE: ISSUANCE OF LETTER OF AUTHORITY AND TAXPAYER’S INVESTIGATION”
REVOCATION OF DEPARTMENT ORDER NO. 6-99 (DATED 26 JANUARY 1999), ENTITLED "DEFINING THE AUTHORITY OF THE COMMISSIONER OF INTERNAL REVENUE AND REGIONAL DIRECTORS, RE: ISSUANCE OF LETTER OF AUTHORITY AND TAXPAYER'S INVESTIGATION"
