OPINION — AG — **** AUTHORITY OF CITY TO CLEAN UP PRIVATE PROPERTY **** TITLE 11 O.S. 1971 20 [11-20] WHICH AUTHORIZES CITY OFFICIALS TO REMOVE TRASH AND WEEDS AND MOW GRASS LOCATED ON PRIVATELY OWNED PROPERTY AFTER NOTICE TO THE OWNER AND AN OPPORTUNITY FOR HEARING, IS CONSTITUTIONAL. (C. LARRY PAIN)