by Ir. M. Lies Suprapti $7.00
by Dr. Khalid Na'im $5.00
by Yoh. Rohmadi Mulyono, MSF. $6.00
by Prof. Dr. Ir. Tri Yuwanta S.U., DEA $7.00
by Abdurrahman Abdul Khaliq $5.00
by Abdullah Nashih Ulwan $5.00