TY - BOOK ID - 5179811 TI - Bird populations in East Central Illinois : fluctuations, variations and development over a half-century PY - 1982 VL - 52 SN - 025200955X PB - Champaign, IL : University of Illinois Press, DB - UniCat KW - Bird populations KW - -Vertebrate populations KW - -Bird populations KW - Vertebrate populations UR - https://www.unicat.be/uniCat?func=search&query=sysid:5179811 AB - ER -