000			00283nam a2200097 4500
100			_aGeological Soc. of London
245			_a Journal of GSL,vol.129 _cGeological Soc. of London
260			_aGeological Soc. of London _c1973
260			_aGeological Soc. of London _c1973
942			_cCR
999			_c336878 _d336878