TY - GEN AU - Butler,H M AU - Wallace,K M AU - Fulmer,C B TI - Half-value thicknesses of ordinary concrete for neutrons from cyclotron targets SN - 0017-9078 PY - 1973///0619 KW - Construction Materials KW - Fast Neutrons KW - Neutrons KW - Nuclear Physics KW - instrumentation KW - Radiation Protection N1 - Publication Type: Journal Article ER -