by Heinz Frick & Tri Hesti Mulyani $7.00
by Prof. Adolf Lippi, CP $4.00
by Nunung Marlina Djarijah & Ir. Abbas Siregar Djarijah $6.00
by Ir. Setijo Pitojo $9.00
by Eko Budi Kuncoro $13.00
by $4.00