by V. Indra Sanjaya, Pr. $6.00
by $4.00
by J. Darminta, SJ $3.00
by Sridadi & Rachmanto $6.00
by Jan Hendrik Rapar $6.00
by Prof. Dr. Kees Bertens, MSC $13.00
by Ir. H. Rahmat Rukmana $6.00