Title: Let Them Eat Dirt
Description: xiii, 288 pages ; 20 cm
Subjects: Children, health and hygiene, Immune system, Microbiology, Microorganisms, Bacteria, Pathogenic microorganisms, Child rearing, Popular works, Children, Health and hygiene, Child Rearing, Microbiologie, Ouvrages de vulgarisation, Micro-organismes, Bactéries, Aspect sanitaire, Micro-organismes pathogènes, Éducation des enfants, Enfants, Santé et hygiène, Medical microbiology, Children -- Health and hygiene, Bacteria -- Health aspects