| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| National Science Information Systems: A Guide to Science Information Systems in Bulgaria, Czechoslovakia, Hungary, Poland, Romania, and Yugoslavia | 978-O-262-11O46-4 (O-262-11O46-6) | 1972 | David H. Kraus ยท Vladimir Slamecka |