000 00285nam a2200109Ia 4500
008 211214s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
245 0 _aObserver s handbook
260 _bH. M. S. Office.
_aLondon
_c1952
653 _aGEOGRAPHY
942 _c1
999 _c30445
_d30445