by WK $16.00
by WK $12.00
by Khairul Basar $11.00
by Nursalam $12.00
by Tierney $18.00
by Marihot P. Siahaan, S.E. $12.00
by Drs. Daryanto $7.00
by J. F. Dumanauw $7.00
by Komlit KWI $3.00
by Dr. Emmanuel Subangun $4.00
by Reeves $13.00