by Prof. drh. Charles Rangga Tabbu, M.Sc., Ph.D $13.00
by AAK (Aksi Agraris Kanisius) $5.00
by Dr. Al. Purwa Hadiwardoyo, MSF. $3.00
by F. Budi Hardiman $9.00
by Reza A.A. Wattimena $9.00
by H.A. Aziz Salim Basyarahil $7.00