共 8 条
[1]
BEEKMANN SE, 1990, INFECT CONT HOSP EP, V11, P371
[2]
MCCORMICK RD, 1981, AM J MED, V70, P928, DOI 10.1016/0002-9343(81)90558-1
[3]
WEINGER M, 1990, ESSENTIALS MODERN HO, P321
[4]
1988, COMMENTS OSHAS ADV N
[5]
1989, FED REGISTER, V54, P23042
[6]
1987, MMWR S2, V36, P35
[7]
1987, FED REGISTER, V52, P210
[8]
1980, CENSUS DATA SAN FRAN