"June 1989.""IEPA/WPC/89-211."Includes bibliographical references (p.52-54).Mode of access: Internet
Mode of access: Internet.Bound with this are: Potash feldspar of possible economic value in the Bars...
(In U.S. Geological survey. 6th annual report, 1884-85, p. 353-398. illus. 30cm, Washington, 1885)Mo...
"IEPA/WPC/91-56."--Cover."February 1991."--Cover."January 1991."Includes bibliographical references ...
"IEPA/WPC/88-017."--Cover."March 1988."--Cover.Bibliography: p. 57-58.Mode of access: Internet
"IEPA/WPC/92-053."--Cover."February 1993."Includes bibliographical references (p. 57-60).Mode of acc...
"February 1988."--Cover."IEPA/WPC/88-012."--Cover.Bibliography: p. 47.Mode of access: Internet
"September 1988."--Cover."IEPA/WPC/88-034."-- Cover."August, 1988."Bibliography: p. 49-50.Mode of ac...
"IEPA/WPC/89-212."--Cover."June 1989.""August 1989."--Cover.Includes bibliographical references.Mode...
"October 1989."--Cover."April 1987.""IEPA/WPC/89-262."--Cover.Includes bibliographical references (p...
"IEPA/WPC/88-009.""January 1988."--Cover.Bibliography: p. 49-50.Mode of access: Internet
"IEPA/WPC/95-020"--Cover."May 1995."Includes bibliographical references (p. 38-42).Mode of access: I...
"February 1988"--Cover."IEPA/WPC/88-014"--Cover.Includes bibliographical references (p. 66-67)Mode o...
Includes index.Mode of access: Internet.Bound with this are: Water and the conservation movement / b...
Extract from the 16th annual report of the U.S. Geological survey, 1894-95, pt. II.cover-title.Mode ...
"IEPA/WPC/89-105."--Cover."April 1989."Bibliography: p. 98-101.Mode of access: Internet
Mode of access: Internet.Bound with this are: Potash feldspar of possible economic value in the Bars...
(In U.S. Geological survey. 6th annual report, 1884-85, p. 353-398. illus. 30cm, Washington, 1885)Mo...
"IEPA/WPC/91-56."--Cover."February 1991."--Cover."January 1991."Includes bibliographical references ...
"IEPA/WPC/88-017."--Cover."March 1988."--Cover.Bibliography: p. 57-58.Mode of access: Internet
"IEPA/WPC/92-053."--Cover."February 1993."Includes bibliographical references (p. 57-60).Mode of acc...
"February 1988."--Cover."IEPA/WPC/88-012."--Cover.Bibliography: p. 47.Mode of access: Internet
"September 1988."--Cover."IEPA/WPC/88-034."-- Cover."August, 1988."Bibliography: p. 49-50.Mode of ac...
"IEPA/WPC/89-212."--Cover."June 1989.""August 1989."--Cover.Includes bibliographical references.Mode...
"October 1989."--Cover."April 1987.""IEPA/WPC/89-262."--Cover.Includes bibliographical references (p...
"IEPA/WPC/88-009.""January 1988."--Cover.Bibliography: p. 49-50.Mode of access: Internet
"IEPA/WPC/95-020"--Cover."May 1995."Includes bibliographical references (p. 38-42).Mode of access: I...
"February 1988"--Cover."IEPA/WPC/88-014"--Cover.Includes bibliographical references (p. 66-67)Mode o...
Includes index.Mode of access: Internet.Bound with this are: Water and the conservation movement / b...
Extract from the 16th annual report of the U.S. Geological survey, 1894-95, pt. II.cover-title.Mode ...
"IEPA/WPC/89-105."--Cover."April 1989."Bibliography: p. 98-101.Mode of access: Internet
Mode of access: Internet.Bound with this are: Potash feldspar of possible economic value in the Bars...
(In U.S. Geological survey. 6th annual report, 1884-85, p. 353-398. illus. 30cm, Washington, 1885)Mo...
"IEPA/WPC/91-56."--Cover."February 1991."--Cover."January 1991."Includes bibliographical references ...