[MEDICAL AND SANITARY PROBLEMS IN UNDERDEVELOPED AREAS].
D000383:Agriculture; D001938:Brazil; D003140:Communicable Disease Control; D004467:Economics; D006801:Humans; D009790:Occupations; D011634:Public Health; D012499:Sanitation; D012924:Social Conditions
AGRICULTURE; BRAZIL; COMMUNICABLE DISEASE CONTROL; ECONOMICS; OCCUPATIONS; PUBLIC HEALTH; SANITATION; SOCIAL CONDITIONS
PROBLEMAS M'EDICO-SANIT'ARIOS DE 'AREAS SUBDESENVOLVIDAS.