No Inv.: 90640-90641/P/Perp/04/2c
No Inv.: 90649/P/Perp/04/1c
No Inv.: 90590-90591/P/Perp/04/2c
No Inv.: 90582/P/Perp/04/1c
Judul asli :"Principles of economics"
No Inv.: 101247,101248,105590/P/Perp/05/3c
No Inv.: 101678-101680/P/Perp/05/3c
No Inv.: 101240-101242/P/Perp/05/3c
No Inv.: 101824/P/perp/05/1c
No Inv.: 101748-101750/P/Perp/05/3c