000 00297nam a2200097 4500
100 _aUniversity of Chicago Press
245 _aJournal of Geology,vol.102(1-6)
_cUniversity of Chicago Press
260 _aUniversity of Chicago Press
_c1994
260 _aUniversity of Chicago Press
_c1994
942 _cCR
999 _c337029
_d337029