by Ir. Ari Wijayani Purwanto $11.00
by Ir. Rindit Pembayun, M.P. $6.00
by Agus S. Gunadi $9.00
by Ir. Hieronymus Budi Santoso dan Heru Respati $5.00
by dr. Endang Lanywati $5.00
by RW. Allard $11.00