共 12 条
[1]
ADAMS N, 1971, HEALTH PHYS, V21, P105
[6]
LANGMEAD W A, 1961, Ann Occup Hyg, V4, P119
[8]
MACHT SH, 1952, AM J ROENTGENOL, V68, P809
[9]
SPALDING C. K., 1962, HEALTH PHYS, V8, P499, DOI 10.1097/00004032-196210000-00003