No Inv.: 80942-80948/P/02/7c~89713/PSM/Perp/04/1c~130162/S/Perp/11/1c
No Inv.: 80934-80935/P/02/2c
No Inv.: 80936-80937/P/02/2c
No Inv.: 80876/P/02/1c
No Inv.: 80878/P/02/1c
No Inv.: 80906-80907/P/02/2c
No Inv.: 80904-80905/P/02/2c
Judul asli :"The Economic theory of cooperative"
No Inv.: 80077/S/92/1c
No Inv.: 77019/S/01/1c