000 00285nam a2200097Ia 4500
100 _aEkdale A A
245 _aIchnology : Use of Trace Fossils in Sedimentology & Stratigraphy
260 _bSoc Eco Paleontology & Minerology, Oklahoma
082 _aH5/N84/B15946
300 _app 317; 28*21
999 _c29726
_d29726