TY  - GEN
AU  - Messel, H.                   
AU  - Crawford,D.F.
TI  - Electron--photon shower distribution function : tables for lead, copper, and air absorbers
U1  - 539.754 
PY  - 1970///
CY  - Oxford, New York
PB  - Pergamon Press,1970.
KW  - Cascade shower
KW  - Tables
N1  - Distributer: Al-Ahram; Includes bibliographical references; Catalogued by: Sara
ER  -