DP - MPI Library TY - JOUR AU - Mathewson, H. S. T1 - PORTO RICO. Report from San Juan UR - https://www.jstor.org/stable/41470934 T2 - Public health reports : the official journal of the U.S. Public Health Service SP - Vol. 17, No. 35 (1902), p. 2029-2030 CY - Thousand Oaks PY - 1902 ER -