Title: The peninsula of Yucatan, medical, biological, meteorological and sociological studies
Subjects: Mayas, Medical geography, Natural history, Social life and customs, Tropical medicine, Yucatan medical expeditions, 1929-1931, Tropical Medicine, Yucatán Medical Expeditions (1929-1931)
Places: Mexico, Yucatán (Mexico : State), Yucatán (State)