000
00290pam a2200145 a 4500
020
_c
041
_h
100
_a
William N. Rom
245
_a
Environmental and Occupational Medicine
250
_a
IInd
260
_c
1992
300
_a
1493
653
_a
Microbiology
930
_a
894
999
_c
246747
_d
246747