by Prof. J. Suprapto, M.A. APU $16.00
by Pelezar. Michael J. & E.C.S. Chan $9.00
by Rumah Sakit Persahabatan $7.00
by dr. Yoannes Y. Laban $5.00
by Drs. H. Inu Kencana Syafiie $9.00
by Brooks $18.00
by Dr. Ronald Hutapea, SKM, Ph.D $9.00