ืกื ืกืืืื ืขื 30 ืืืืื ืืขืืจืืืช ืืื ืืงืืืืจืืืช ืืืืจื ืืืจืื ื ืืคื ื ืืืืื.
This is premium study material. Sign in or create a free account to get started.