by Gordon, Gibson G. dan Paul Skett $7.00
by $6.00
by Prof. dr. Unandar Budimulja, dr. Kusmarinah Bramono $7.00
by Prof. dr. Sarwono Waspadji, Prof. dr. Slamet Suyono $5.00
by Widyasari Kumala $8.00
by Judith E. Brown Ph.D & Richard E. Brown, M.D., P.Ph $5.00
by - $7.00