共 50 条
- [23] THE THEORY OF INFORMATION-SOURCES IN THE USSR ZENTRALBLATT FUR BIBLIOTHEKSWESEN, 1990, 104 (04): : 178 - 183
- [25] INFORMATION-SOURCES FOR RESEARCH ADMINISTRATORS SRA-JOURNAL OF THE SOCIETY OF RESEARCH ADMINISTRATORS, 1976, 8 (02): : 17 - 21
- [28] INFORMATION-SOURCES FOR RESEARCH ADMINISTRATORS SRA-JOURNAL OF THE SOCIETY OF RESEARCH ADMINISTRATORS, 1976, 8 (01): : 11 - 15