by Prof. Dr. Kees Bertens, MSC $13.00
by Mgr. P. Van Diepen, OSA. $6.00
by Drs. Khaelany H.D., M.A. $9.00
by Abdul Aziz bin Abdullah al-Muqbil $5.00
by Prof. Dr. M. Mutawalli asy-Sya'rawi $6.00
by Dr. C. Groenen, OFM. $8.00