TY - JOUR T1 - A Discussion of the Methods used for Measuring Roentgen-Ray Applied Intensity JF - Cleveland Clinic Journal of Medicine JO - Cleve Clin J Med SP - 42 LP - 51 VL - 1 IS - 1 AU - U. V. Portmann Y1 - 1931/06/01 UR - http://www.ccjm.org/content/1/1/42.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -