Perine, Peter L; Hopkins, Donald R; Niemel, Paul L. A; St. John, Ronald; Causse, Georges; Antal, G. M; World Health Organization(World Health OrganizationWorld Health Organization, 1984)
Perine, Peter L; Hopkins, Donald R; Niemel, Paul L. A; St. John, Ronald; Causse, Georges; Antal, G. M; World Health Organization(Organización Mundial de la Salud, 1984)
Perine, Peter L; Hopkins, Donald R; Niemel, Paul L. A; St. John, Ronald; Causse, Georges; Antal, G. M; World Health Organization(Organisation mondiale de la Santé, 1985)