|Sep-1925||Facts About The Differential Diagnosis of Leprosy||Ortiz, Pedro N.|
|Sep-1929||The San Juan District Hospital||Ortiz, Pedro N.|
|Sep-1929||Sanitation and Health activities are Fostered in Porto Rico under Direction of Commisioner||Ortiz, Pedro N.|
|Oct-1927||A Summaryy of Public Health Activities in Porto Rico for the year 1926-27||Ortiz, Pedro N.|
|Jun-1927||The Tropics from the Public Health Standpoint||Ortiz, Pedro N.|
|Jun-1930||Underlying Principles of Public Health Administration||Ortiz, Pedro N.|
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