by Achmad Tjahhono, Mahagiyani $12.00
by Irianto Aritonang $6.00
by Louis Irving Horowitz $12.00
by Drs. Muchdarsyah Sinungan $9.00
by Adler Haymans Manurung $6.00
by Drs. Safri Nurmantu MSi $9.00