World Health Organization
World Health Organization, 2013
Buku Teks
William V. Giannobile, Brian A. Burt, Robert J. Genco
Blackwell, 2010
Buku Teks SO
[edited by] Aubrey Sheiham ... [and others]
Quintessence Editora, 2014
Buku Teks SO
Kostlan, J.
World Health Organization Regional Office for Europe, 1979
Buku Teks SO
by Walter J. Pelton ...[et al.]
Harvard University Press, 1969
Buku Teks SO