[ BIR REVENUE MEMORANDUM ORDER NO. 15-2007, July 18, 2007 ]
AMENDING RMO 10-2007 THEREBY SHORTENING THE MINIMUM PERIOD OF SURVEILLANCE FROM THIRTY (30) DAYS TO FIFTEEN (15) DAYS*
* Text Available at Office of the National Administrative Register, U.P. Law Complex, Diliman, Quezon City.