Counting tubes : theory and applications / S. C. Curran and J. D. Craggs. Curran, Samuel Crowe Craggs, J. D., joint author. Ionization chambers. QC787.I6 C8 539.774 CUC New York : Academic Press, 1949. 1949. 1949 Text xi, 238 p. : eng Laboratory technique monograph. [from old catalog]