3.0 23 Density 290 \ O53 ° 10? - 104 108 Dose, Roentgens 3.0 23 o Wahoo & Umbrella Density 29 1.0 os 105 PNEe yO Figure C.13 Co" calibration curves for 1290 emulsion. yh Dose, Roentgens 109 Figure C.14 Co" calibration curves for 548-0 emulsion. 376 Atl