by Drs. Muhsin M.K. S.Ag, M.Sc $6.00
by Ir. Daisy P. Sriyadi Hendaryono, M.Si & Ir. Ari Wijayani $6.00
by - $6.00
by Wahid Abdus Salam Bali $12.00
by Prof. drh. Charles Rangga Tabbu, M.Sc., Ph.D $18.00
by Drs. Sindu Galba $6.00
by Bambang Agus Murtidjo $6.00
by Gregory F. A. Pierce $8.00