000 00283nam a2200097Ia 4500
008 211214s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
245 0 _aAnnals of the international geophysical yerar
260 _bPergamon Press
_aLondon
_c1957
942 _c1
999 _c56607
_d56607