TI - Leisure and recreation: A study of leisure and recreation in their sociological aspects PT - JOUR DP - 1949 TA - Journal of the American Medical Association pages = {632}, VI - 141 IP - 9 AID - 10.1001/jama.1949.02910090058031 [doi] 4100 - http://dx.doi.org/10.1001/jama.1949.02910090058031 SO - Journal of the American Medical Association October 29, 1949 141(9):632