1. Monthly digest of statistics;OFFICE, C.E.N.T.R.A.L.S.T.A.T.I.S.T.I.C.A.L.,1974
2. Present status of influenza virus vaccines;DAVENPORT, F.M.,1966
3. Killed influenza virus vaccines: present status, suggested use, desirable developments;DAVENPORT, F.M.,1970
4. Field trial with human and equine influenza vaccines in children: protection and antibody titres;CASPARIs, D.E.; WESSELIUS-, A.; MASUREL, N.; KERREBIJN, K.F.;Bulletin of the World Health Organization,1972
5. DEPARTMENT OF HEALTH AND SOCIAL,1974