Horecky, P. L. (1976). East Central and Southeast Europe: A handbook of library and archival resources in North America ; the research reported herein was performed pursuant to a contract with the U. S. Department of Health, Education, and Welfare, Office of Education, under PL 85-864, title VI, section 602, as amended, and PL 480. Santa Barbara, Calif. [u.a.]: Clio Press.

Horecky, Paul L. East Central and Southeast Europe: A Handbook of Library and Archival Resources in North America ; the Research Reported Herein Was Performed Pursuant to a Contract With the U. S. Department of Health, Education, and Welfare, Office of Education, Under PL 85-864, Title VI, Section 602, As Amended, and PL 480. Santa Barbara, Calif. [u.a.]: Clio Press, 1976.

Horecky, Paul L. East Central and Southeast Europe: A Handbook of Library and Archival Resources in North America ; the Research Reported Herein Was Performed Pursuant to a Contract With the U. S. Department of Health, Education, and Welfare, Office of Education, Under PL 85-864, Title VI, Section 602, As Amended, and PL 480. Santa Barbara, Calif. [u.a.]: Clio Press, 1976.