"FWS/OBS-82/10.60.""January 1984."Includes bibliographical references (p. 54-64).Mode of access: Internet
Issued Aug. 1978.Prepared in cooperation with Environmental Protection Agency, National Marine Fishe...
"August 1996."Includes bibliographical references (p. 7-9).Mode of access: Internet
"FWS/OBS-82/10.12.""July 1982."Distributed to depository libraries in microfiche."Biological Service...
"FWS/OBS-82/10.84."Map on lining paper."September 1984."Distributed to depository libraries in micro...
"September 1983."Includes bibliographical references (p. 21-22).Mode of access: Internet
"FWS/OBS-82/10.48.""September 1983."Bibliography: p. 14-15.Mode of access: Internet
"August 1993."Includes bibliographical references (p. 15-18).Mode of access: Internet
"October, 1966"Includes bibliographical references (p. 10-11).Mode of access: Internet
"September 1993."Cover title.Includes bibliographical references (p. 25-34).Mode of access: Internet
"Submitted for publication September, 1973."Includes bibliography: p. 9.Electronic text and image da...
"FWS/OBS-82/10.74.""September 1984."Includes bibliographical references (p. 13-15).Mode of access: I...
"August 1993."Cover title.Includes bibliographical references (p. 13-14)Mode of access: Internet
"December 1984."Distributed to depository libraries in microfiche.Includes bibliographical reference...
Cover title.Includes bibliographical references (p. 23-28).Mode of access: Internet
Map on lining paper."September 1983."Distributed to depository libraries in microfiche.Includes bibl...
Issued Aug. 1978.Prepared in cooperation with Environmental Protection Agency, National Marine Fishe...
"August 1996."Includes bibliographical references (p. 7-9).Mode of access: Internet
"FWS/OBS-82/10.12.""July 1982."Distributed to depository libraries in microfiche."Biological Service...
"FWS/OBS-82/10.84."Map on lining paper."September 1984."Distributed to depository libraries in micro...
"September 1983."Includes bibliographical references (p. 21-22).Mode of access: Internet
"FWS/OBS-82/10.48.""September 1983."Bibliography: p. 14-15.Mode of access: Internet
"August 1993."Includes bibliographical references (p. 15-18).Mode of access: Internet
"October, 1966"Includes bibliographical references (p. 10-11).Mode of access: Internet
"September 1993."Cover title.Includes bibliographical references (p. 25-34).Mode of access: Internet
"Submitted for publication September, 1973."Includes bibliography: p. 9.Electronic text and image da...
"FWS/OBS-82/10.74.""September 1984."Includes bibliographical references (p. 13-15).Mode of access: I...
"August 1993."Cover title.Includes bibliographical references (p. 13-14)Mode of access: Internet
"December 1984."Distributed to depository libraries in microfiche.Includes bibliographical reference...
Cover title.Includes bibliographical references (p. 23-28).Mode of access: Internet
Map on lining paper."September 1983."Distributed to depository libraries in microfiche.Includes bibl...
Issued Aug. 1978.Prepared in cooperation with Environmental Protection Agency, National Marine Fishe...
"August 1996."Includes bibliographical references (p. 7-9).Mode of access: Internet
"FWS/OBS-82/10.12.""July 1982."Distributed to depository libraries in microfiche."Biological Service...