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008 211214s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
245 0 _aScientific objectives
260 _bBUTTERWORTHS SCIENTIFIC PUBLICATIONS
_aLONDON
_c1952
300 _aVI, 113p p.
653 _aNATURAL SCI
942 _c1
999 _c35656
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