No Inv.: 80707/P/02/1c
No Inv.: 80712/P/02/1c
No Inv.: 80466/S/02/1c
No Inv.: 80787/P/02/1c
No Inv.: 80876/P/02/1c
Judul asli :"The Economic theory of cooperative"
No Inv.: 80091/S/89/1c
No Inv.: 80915/P/02/1c
No Inv.: 80922-80923/P/02/2c
No Inv.: 80787/P/02/1c