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A PHP Error was encountered

Severity: Notice

Message: Undefined offset: 1

Filename: controllers/Document.php

Line Number: 69

Backtrace:

File: /home/rama/public_html/application/controllers/Document.php
Line: 69
Function: _error_handler

File: /home/rama/public_html/index.php
Line: 296
Function: require_once

@thesis{thesis, author={Jhon Renol and Nerli }, title ={PENGARUH BIAYA PRODUKSI TERHADAP HARGA PENJUALAN MINYAK KELAPA SAWIT PADA PT PERKEBUNAN NUSANTARA III MEDAN}, year={2012}, url={http://digilib.unimed.ac.id/9826/}, abstract={Penelitian ini berjudul} }