000 00583nam a2200181Ia 4500
008 131223s9999 xx 000 0 und d
040 _aISI KOLKATA
041 _aEnglish
082 _a331.823
_bF535
100 _aWeston H C
245 _aFurther experiments on the use of special spectacles in very fine processes
260 _aLondon
_bH.M.S.Office
_c1929
300 _a34p.
440 _aMedical Research Council,Industrial Health Research Board(formerly the industrial research board) report; no.57
650 _aLabor economics
700 _aAdams S
_4Auth.
942 _cBK
999 _c58774
_d58774