40422Measurements of concentrations of human serum immunoglobulins.Journal articles · December 31, 1971
40423Serum immunoglobulin concentrations in epidemic meningococcal meningitis in Niger.Journal articles · December 31, 1971
40426YELLOW-FEVER VACCINATING CENTRES_x000D_FOR INTERNATIONAL TRAVEL = CENTRES DE VACCINATION CONTRE LA FIÈVRE JAUNE POUR LES VOYAGES INTERNATIONAUXJournal articles · December 31, 1971
40427VACCINATION CERTIFICATE REQUIREMENTS FOR INTERNATIONAL TRAVEL = CERTIFICATS DE VACCINATION EXIGÉS DANS LES VOYAGES INTERNATIONAUXJournal articles · December 31, 1971
40428VACCINATION CERTIFICATE REQUIREMENTS FOR INTERNATIONAL TRAVEL = CERTIFICATS DE VACCINATION EXIGÉS_x000D_DANS LES VOYAGES INTERNATIONAUXJournal articles · December 31, 1971
40432Weekly Epidemiological Record, 1971, vol. 46, 32 [full issue]Journal articles · December 31, 1971
40433Preliminary studies on the development of a gonococcal vaccine.Journal articles · December 31, 1971
40436YELLOW-FEVER VACCINATING CENTRES _x000D_FOR INTERNATIONAL TRAVEL = CENTRES DE VACCINATION CONTRE LA FIÈVRE JAUNE POUR LES VOYAGES INTERNATIONAUXJournal articles · December 31, 1971
40437NOTE ON GEOGRAPHIC AREAS = NOTE SUR LES UNITÉS GÉOGRAPHIQUESJournal articles · December 31, 1971
40438DISEASES SUBJECT TO THE REGULATIONS : Infected Areas as on 14 October 1971 = MALADIES SOUMISES AU RÈGLEMENT : Zones infectées an 14 octobre 1971Journal articles · December 31, 1971
40440CRITERIA USED IN COMPILING THE INFECTED AREA LIST = CRITÈRES APPLIQUÉS POUR LA COMPILATION DE LA LISTE DES ZONES INFECTÉESJournal articles · December 31, 1971