by Ir. Yudo Sudarto SP $5.00
by Ir. Setijo Pitojo $5.00
by Bambang Agus Murtidjo $6.00
by Rachmat Subagya $6.00
by Ir. Hieronymus Budi Santoso $5.00
by Martin Wijokongko $6.00
by Prof. Mr. Dr. Sudargo Gautama $8.00
by Supranto, J. $7.00
by Tim Redaksi Tatanusa $12.00
by Ann M. Martin $7.00
by Ivy Naistadt $11.00
by Paul Goldstein $6.00