by Wulandari Ekasari & Amatullah Shafiyyah $6.00
by Sawidji Widoatmodjo, S.E $9.00
by Ir. Ali Bin Nafayyi al-Alyam $6.00
by J. Donald Walters $5.00
by M. Arthur Gillis $11.00
by Piero Ferrucci $9.00
by S. Wibowo $13.00