共 8 条
[1]
BATHAM C, 1929, IND STUDIES IDUSTRIA, V12, P74
[3]
BROWN CE, 1935, 3289 US BUR MIN
[4]
Gardner LU, 1933, AM J PATHOL, V9, P751
[5]
GREEN H. L., 1934, Journal of Industrial Hygiene, V16, P29
[6]
GREEN HL, 1935, PHYS METHODS ESTIMAT, V45, P5
[8]
HATCH T, 1934, J IND HYG, V16, P177