AU - SWEANY HC, KLAAS R TI - X-ray diffraction analysis as applied in pneumoconiosis PT - JOUR DP - 1939 TA - Journal of the American Medical Association pages = {610-614}, VI - 112 IP - 7 AID - 10.1001/jama.1939.02800070026006 [doi] 4100 - http://dx.doi.org/10.1001/jama.1939.02800070026006 SO - Journal of the American Medical Association February 18, 1939 112(7):610