TI - THe medical manual of the air service PT - JOUR DP - 1919 TA - Journal of the American Medical Association pages = {1368-1369}, VI - 72 IP - 19 AID - 10.1001/jama.1919.02610190030011 [doi] 4100 - http://dx.doi.org/10.1001/jama.1919.02610190030011 SO - Journal of the American Medical Association May 10, 1919 72(19):1368