TY - BOOK T1 - The Cretaceous-Tertiary boundary in the San Juan and Raton Basins, New Mexico and Colorado / DA - c1987. CY - Boulder, Colo. : AU - Fassett, James E. AU - Rigby, J. Keith, VL - 209 CN - QE685 CN - QE685 PB - Geological Society of America, PP - Boulder, Colo. : PY - c1987. N1 - Two folded maps inserted in pocket. ID - 136280 KW - Cretaceous-Paleogene boundary KW - Cretaceous-Paleogene boundary KW - Geology KW - Geology SN - 0813722098 (pbk.) TI - The Cretaceous-Tertiary boundary in the San Juan and Raton Basins, New Mexico and Colorado / ER -