by Dorling Kondersley Limited $11.00
by Aziz Alimul $0.00
by Drs. Mulyono HAM, M.Pd $11.00
by Juni Prianto L.A., Tjahaya P.U., dkk $30.00
by John S. Speakman, MD $5.00
by Dra. Maria Ulfah Anshor, dr. Wan Nendra K $7.00
by C. Rollin Niswonger $12.00