Perlindungan hukum bagi pemborong dalam pelaksanaan perjanjian pemborongan dalam hal terjadi penurunan nilai uang akibat krisis (studi kasus putusan no. 276 pk/pdt/2009) = Legal protection for contractor in conducting chartering agreement in case of declining value of money due to crisis (case no. 276/pk/pdt/2009) / Edwinal Rahadian