AU - WELCH AS TI - PHotomicrographic motion pictures PT - JOUR DP - 1938 TA - Journal of the American Medical Association pages = {552-554}, VI - 110 IP - 8 AID - 10.1001/jama.1938.02790080010003 [doi] 4100 - http://dx.doi.org/10.1001/jama.1938.02790080010003 SO - Journal of the American Medical Association February 19, 1938 110(8):552