by Nursalam $12.00
by Prof. C.J. Ebrahim $6.00
by WK $13.00
by Brooks $20.00
by WK $16.00
by Aziz Alimul $9.00
by Prof. Mr. Dr. Sudargo Gautama $8.00
by $6.00
by Prof. Drs. S. Pamudji, M.P.A $9.00
by Ir. Sumeru Ashari, M.A gr. Sc $7.00
by Dr. Sa'ad Riyadh $12.00