by Sridadi $6.00
by Adelbert Snijders $12.00
by Dr. Al. Purwa Hadiwardoyo, MSF. $4.00
by Prof. Djaali $0.00
by Drs. Slamet Saksono $7.00
by Dr. Harry Hamersma $5.00
by Andi Hamzah $0.00
by Gregory Grossman $9.00
by Richard I Levin $16.00