by Drs. H. Malayu S.P. Hasibuan $7.00
by Drs. Robinson Tarigan, M.R.P $11.00
by Alison Hull, M.P.H., R.D $6.00
by Dr. Farida Rahim, M.Ed $7.00
by Dr. Zakiah Daradjat, dkk $7.00
by William J. Goode $9.00