TY - JOUR AU - Carpenter, F. M. AU - Richardson, Jr., Eugene S. PY - 1971 DA - 1900/01/01 TI - Additional Insects in Pennsylvanian Concretions From Illinois SP - 080989 VL - 78 AB - SN - 0033-2615 UR - https://doi.org/10.1155/1971/80989 DO - 10.1155/1971/80989 JF - Psyche PB - Hindawi Publishing Corporation KW - ER -