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Health and socio-economic studies in Puerto Rico V. Second survey of the Lafayette area

[San Juan, P.R.? 1940 .
547-621 p. , Caption title.

Incomes and expenditures of wage earners in Puerto Rico.

By Jones, Alice Hanson.
Puerto Rico Dept. of Labor 1947 .
152 p. , At head of title: Government of Puerto Rico, Dept. of Labor, in cooperation with the United States Bureau of Labor Statistics. 23 cm..

Health and socio-economic studies in Puerto Rico

By Morales Otero, Pablo.
San Juan, P.R. [s.n.] 1937 .
p. 44-313 , Articles reprinted from the Puerto Rico Journal of Public Health and Tropical Medicine.