000 00290 a2200121 4500
080 _a614
_bV 541 H
245 1 _aHealth in relation to occupation
_cby H.M. Vernon
260 _aLondon
_c1939
650 _aOccupational Health
100 1 _aVernon, H.M.
_d
300 _a355 p.
901 _a18722
999 _c38960
_d38960