title: Medical geography: its methods and objectives.
mesh_terms: D000818:Animals; D001424:Bacterial Infections / Q000453:epidemiology; D002980:Climate; D003906:Developing Countries; D004197:Disease Reservoirs; D004199:Disease Vectors; D004813:Epidemiology; D005502:Food; D005843:Geography; D006801:Humans; D009017:Morbidity; D009181:Mycoses / Q000453:epidemiology; D010272:Parasitic Diseases / Q000453:epidemiology; D011528:Protozoan Infections / Q000453:epidemiology; D012282:Rickettsia Infections / Q000453:epidemiology; D012987:Soil; D014777:Virus Diseases / Q000453:epidemiology; D014867:Water; D014881:Water Supply
chemical_list: D012987:Soil; D014867:Water