by Drs. Hg. Suseno Triyanto Widodo $6.00
by drh. N. Tarigan, MSc $6.00
by Soekartawi $7.00
by I. Marsana Windhu $4.00
by $18.00
by Elga Andriana $7.00
by Nasution, Harun $5.00
by WK $11.00
by Pradipta $11.00
by Malvino $20.00
by Agus DS $7.00
by A. Yuniarti, S.Pd. $8.00