000 00492 a2200145 4500
080 _a614.71.0014:53.08
_bA 512 A
245 1 _aAir sampling instruments
_bFor evaluation of atmospheric contaminants
250 _a3rd edb.
260 _aOhio
_bAmerican Conference of Governmental Industrial Hygienists
_c1966
650 _aAir Sampling Instruments
650 _aAtmospheric Contaminants
700 _aAmerican Conference of Governmental Industrial Hygienists
100 _a
_d
901 _a110860
999 _c39032
_d39032