"February 1987."Distributed to depository libraries in microfiche.Cover title.Mode of access: Internet
"December 1987"--P. [2] of cover.Distributed to depository libraries in microfiche.Cover title.Mode ...
Chiefly tables."December 1986."Distributed to depository libraries in microfiche.Bibliography: p. 7....
"April 1985"--P. [2] of cover.Distributed to depository libraries in microfiche.Mode of access: Inte...
"June 1987"--P. [2] of cover.Distributed to depository libraries in microfiche.Cover title.Mode of a...
"May 1987"--P. [2] of cover.Distributed to depository libraries in microfiche.Cover title.Mode of ac...
"June 1987"--P. [2] of cover.Distributed to depository libraries in microfiche.Cover title.Mode of a...
"June 1987"-- T.p. verso.Distributed to depository libraries in microfiche.Cover title.Mode of acces...
"December 1987."Distributed to depository libraries in microfiche.Cover title.Mode of access: Intern...
"January 1987."Distributed to depository libraries in microfiche.Cover title.Mode of access: Interne...
"April, 1983."Distributed to depository libraries in microfiche.Cover title.Mode of access: Internet
Chiefly tables."May 1986."Distributed to depository libraries in microfiche.Cover title.Mode of acce...
"January 1987."Distributed to depository libraries in microfiche.Cover title.Mode of access: Interne...
Chiefly tables."May 1986."Distributed to depository libraries in microfiche.Cover title.Mode of acce...
"April 1987"--P. [2] of cover.Distributed to depository libraries in microfiche.Mode of access: Inte...
Chiefly tables."March 1988"--P. [2] of cover.Distributed to depository libraries in microfiche.Cover...
"December 1987"--P. [2] of cover.Distributed to depository libraries in microfiche.Cover title.Mode ...
Chiefly tables."December 1986."Distributed to depository libraries in microfiche.Bibliography: p. 7....
"April 1985"--P. [2] of cover.Distributed to depository libraries in microfiche.Mode of access: Inte...
"June 1987"--P. [2] of cover.Distributed to depository libraries in microfiche.Cover title.Mode of a...
"May 1987"--P. [2] of cover.Distributed to depository libraries in microfiche.Cover title.Mode of ac...
"June 1987"--P. [2] of cover.Distributed to depository libraries in microfiche.Cover title.Mode of a...
"June 1987"-- T.p. verso.Distributed to depository libraries in microfiche.Cover title.Mode of acces...
"December 1987."Distributed to depository libraries in microfiche.Cover title.Mode of access: Intern...
"January 1987."Distributed to depository libraries in microfiche.Cover title.Mode of access: Interne...
"April, 1983."Distributed to depository libraries in microfiche.Cover title.Mode of access: Internet
Chiefly tables."May 1986."Distributed to depository libraries in microfiche.Cover title.Mode of acce...
"January 1987."Distributed to depository libraries in microfiche.Cover title.Mode of access: Interne...
Chiefly tables."May 1986."Distributed to depository libraries in microfiche.Cover title.Mode of acce...
"April 1987"--P. [2] of cover.Distributed to depository libraries in microfiche.Mode of access: Inte...
Chiefly tables."March 1988"--P. [2] of cover.Distributed to depository libraries in microfiche.Cover...
"December 1987"--P. [2] of cover.Distributed to depository libraries in microfiche.Cover title.Mode ...
Chiefly tables."December 1986."Distributed to depository libraries in microfiche.Bibliography: p. 7....
"April 1985"--P. [2] of cover.Distributed to depository libraries in microfiche.Mode of access: Inte...