by Drs. Ec. Alex. S. Nitisemito dan Drs. M. Umar Burham. M.S $6.00
by Linus Suryadi AG $8.00
by Lathiful Khuluq $7.00
by Clara Ng $11.00
by Eddy Djunaedi Karnasudirdja $12.00
by Drs. Djalinus Syah $7.00
