9 1 50 seri hukum bisnis WIDJAJA, gunawan Primary Author mixed material 9794217433 Jakarta Raja Grafindo Persada 1999 Dana investasi Real Estat Yongki Angga Primary Author WIDJAJA, gunawan Primary Author mixed material 9789797691608 Jakarta Raja Grafindo Persada 2008 WIDJAJA, gunawan Primary Author mixed material 9797690326 Jakarta Raja Grafindo Persada 2006 Memahami Prinsip Keterbukaan dalam hukum Perdata WIDJAJA, gunawan Primary Author mixed material 9797690350 Jakarta Rajawali Press 2006 Seri Hukum Bisnis WIDJAJA, gunawan Primary Author mixed material 9793654481 Jakarta RajaGrafindo Persada 2005 Seri Hukum Bisnis WIDJAJA, gunawan Primary Author mixed material 9793654538 Jakarta RajaGrafindo Persada 2005 Transaksi Bisnis Internsaional (Ekspor-Impor & Imbal Jual Beli ) Ahmad Yani Primary Author WIDJAJA, gunawan Primary Author mixed material 9794218022 Jakarta Raja Grafindo Persada RajaGrafindo Persada E. Paramitha Sapardan Primary Author WIDJAJA, gunawan Primary Author mixed material 9797690776 Jakarta RajaGrafindo Persada 2006 WIDJAJA, gunawan Primary Author Yani Primary Author mixed material 979421759X Jakarta PT.Raja Grafindo Persada 2001