TY - BOOK TI - Illinois Natural History Survey bulletin VL - 36:2 (1999) UR - https://www.biodiversitylibrary.org/item/51943 PB - The Survey CY - Champaign, Ill PY - 1999 N1 - Each issue has also a distinctive title. AU - Illinois. Natural History Survey Division KW - Illinois KW - Natural history ER -