TY - RPRT TI - Nuclear rocket shielding methods, modification, updating, and input data preparation. Volume 2 - Compilation of neutron and photon cross section data Final progress report AU - Disney, R. K. AU - Kaiser, R. S. AU - Soltesz, R. G. PY - 1970 UR - https://ntrs.nasa.gov/citations/19710005688 ID - 19710005688 ER -