by Parakkasi, Aminuddin $6.00
by FMIPA Universitas Indonesia $6.00
by Swasono, Sri-Edi, dkk $6.00
by Prof. Dr. h. Sunarto dan Dra. Ny. B. Agung Hartono $9.00
by - $9.00
by Tangoro, Dwi dkk $6.00