by dr. Santoso Gunardi, MS, PAK $6.00
by Prof. dr. Arjatmo Tjokronegoro, dr. Sumedi Sudarsono $7.00
by Dr. H. Jusuf Misbach, SpS(K) $6.00
by Ramlan Ginting $8.00
by Aziz Alimul $7.00
by dr. Clifford Rose & dr. Paul Davies $6.00
by Sartono & Marina Lubniar Sartono $10.00