000 00305nam a2200097 4500
100 _aCambridge University of Press
245 _aGeological Magzine,vol.110(1-6)
_cCambridge University of Press
260 _aCambridge University of Press
_c1973
260 _aCambridge University of Press
_c1973
942 _cCR
999 _c336858
_d336858