TI - INdustrial hygiene problems in bolivia, peru and chile PT - JOUR DP - 1949 TA - Journal of the American Medical Association pages = {1269}, VI - 141 IP - 17 AID - 10.1001/jama.1949.02910170071028 [doi] 4100 - http://dx.doi.org/10.1001/jama.1949.02910170071028 SO - Journal of the American Medical Association December 24, 1949 141(17):1269