OPPortunities to prevent pollution in Illinois.

Subtitle varies.

Opportunities for ethanol - gasohol research in Illinois.

Bibliography: p. 49.

Papers in Illinois history and transactions for the year ... /

Vols. for 1937-1942 issued without series note but constitute no. 44-49 of the Society's Publication.

Osteoporosis in Illinois : analysis of hospital discharge records from 1992 to 1995 /

"December 1997. "

Outdoor recreation in Illinois /

Cover title: Outdoor recreation in Illinois : the statewide comprehensive outdoor recreation plan.

Outdoor recreation in Illinois, the ... policy plan.

"Public review draft."

Outdoor recreation in Illinois, action plan /

Mode of access: Internet.

Osteoporosis in Illinois, 2003.

"3/03"--Colophon.

Phase II report : preliminary investigation of small-scale hydropower potential at five sites in Illinois /

"Project no. 80.190."

Pest and pesticide management in Illinois agriculture : status and policy options /

"Contract IP 3."

Performance measures in Illinois special libraries /

"July, 1983."

Ozone pollution in Illinois /

"IIEQ project no. 10.063."

Pilot project for vehicle scrapping in Illinois /

"May 1993"--Cover.

Patterns of cancer among Asians and Pacific Islanders in Illinois : incidence, 1993-1997 : mortality, 1992-1998 /

"09/00"--Colophon.

Performance of rubberized asphalt pavements in Illinois /

"IHR-R07"--Technical report documentation page.