edited by Hoarst Noack
University Park Press , 1980
Buku Teks
World Health Organization
World Health Organization, 1990
Buku Teks
Richardson, Paul
Aga Khan Univ.-URCCHS, 1993
Buku Teks
World Health Organization
World Health Organization, 1990
Buku Teks
edited by Joseph M. Kasonde and John D. Martin
World Health Organization, 1994
Buku Teks