[Protection of chicks against Salmonella typhimurium colonization by use of a barrier flora given to pathogen free chickens of different ages].
Salvat
G
G
Veterinaires et Alimentaires, Station Experimentale d'Aviculture, Ministere de l'Agriculture, Centre National d'Etudes, Ploufragan, France.
Humbert
F
F
Colin
P
P
Lahellec
C
C
Bennejean
G
G