by Ir. H. Nazarukhan Yasin $13.00
by Drs. Ton Kertapati $7.00
by Drs. Amin Widjaja Tunggal, Ak., M.B.A $9.00
by Institut Dayakologi $12.00
by - $11.00
by J. Soedjati Djiwandono $7.00