http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Report of Commissioner of Health of Porto Rico to Governor of Porto Rico for fiscal year ending June 30, 1927
Annual report on vital statistics, disease incidence, treatment procedures, and disease prevention measures in Puerto Rico.
Electronic reproduction. [Bethesda, Md.] : ProQuest, 2014. digital, PDF file. ProQuest U.S. Executive Branch Documents Mode of access: World Wide Web via ProQuest website.