	american cablesystems acn to buy cable system american cablesystems corp said it agreed in principal to buy a cable television system in los angeles county from heritage communications inc hci for mln dlrs the company said the system being purchased serves about subscribers in the towns of compton south el monte hawaiian gardens and the communities of willowbrook athens firestone florence and east compton it said the uisition will bring to seven the number of cable systems it owns manages or has agreed to buy in the los angeles area reuter 
