Implikasi hukum pelelangan barang jaminan nasabah untuk pelunasan kredit yang diberikan berdasarkan hukum gadai di PT Pegadaian (Persero) = The legal implications auction customer collateral for the repayment of loans granted by pawn law in PT Pegadaian (Persero) / Surya Nala Praya - Surya Nala Praya, author (2014)