"August 2001"--P. [2] of cover.Cover title.Includes bibliographical references (p. 11-12).Mode of access: Internet
"January 1999"--P. 2 of cover.Cover title.Includes bibliographical references (p. 9).Mode of access:...
"April 2001"--P. [2] of cover.Cover title.Includes bibliographical references (p. 13).Mode of access...
"February 2001"--p. [2] of cover.Cover title.Includes bibliographical references.Mode of access: Int...
"May 2001"--T.p. verso.Cover title.Includes bibliographical references (p. 9).Mode of access: Intern...
"September 2000"--P. [2] of cover."In cooperation with the United States Department of Transportatio...
"June 1981."Caption title.Includes bibliographical references.Mode of access: Internet
Cover title.Includes bibliographical references (p. 41-47).Mode of access: Internet
"February 2000"--P. [2] of cover.Cover title.Includes bibliographical references.pt. I. Leaching and...
"January 2001"--P. [2] of cover.Cover title.Includes bibliographical references (p. 7).Mode of acces...
"April 1981"--Cover.Caption title.Includes bibliographical references.Mode of access: Internet
"March 2000"--P. [2] of cover.Cover title.Includes bibliographical references (p. 9).Mode of access:...
"Progress report."Description based on: 1995; title from cover.Mode of access: Internet
"June 2005"--P. [2] of cover.Cover title.Includes bibliographical references (p. 14).Mode of access:...
Includes index."April 1990"--T.p. verso.Shipping list no.: 90-293-P."Supersedes research note FPL-02...
"June 2001"--P. [2] of cover.Cover title.Includes bibliographical references (p. 15).Mode of access:...
"January 1999"--P. 2 of cover.Cover title.Includes bibliographical references (p. 9).Mode of access:...
"April 2001"--P. [2] of cover.Cover title.Includes bibliographical references (p. 13).Mode of access...
"February 2001"--p. [2] of cover.Cover title.Includes bibliographical references.Mode of access: Int...
"May 2001"--T.p. verso.Cover title.Includes bibliographical references (p. 9).Mode of access: Intern...
"September 2000"--P. [2] of cover."In cooperation with the United States Department of Transportatio...
"June 1981."Caption title.Includes bibliographical references.Mode of access: Internet
Cover title.Includes bibliographical references (p. 41-47).Mode of access: Internet
"February 2000"--P. [2] of cover.Cover title.Includes bibliographical references.pt. I. Leaching and...
"January 2001"--P. [2] of cover.Cover title.Includes bibliographical references (p. 7).Mode of acces...
"April 1981"--Cover.Caption title.Includes bibliographical references.Mode of access: Internet
"March 2000"--P. [2] of cover.Cover title.Includes bibliographical references (p. 9).Mode of access:...
"Progress report."Description based on: 1995; title from cover.Mode of access: Internet
"June 2005"--P. [2] of cover.Cover title.Includes bibliographical references (p. 14).Mode of access:...
Includes index."April 1990"--T.p. verso.Shipping list no.: 90-293-P."Supersedes research note FPL-02...
"June 2001"--P. [2] of cover.Cover title.Includes bibliographical references (p. 15).Mode of access:...
"January 1999"--P. 2 of cover.Cover title.Includes bibliographical references (p. 9).Mode of access:...
"April 2001"--P. [2] of cover.Cover title.Includes bibliographical references (p. 13).Mode of access...
"February 2001"--p. [2] of cover.Cover title.Includes bibliographical references.Mode of access: Int...