共 50 条
- [21] EFFICIENCY OF TRANSMISSION FUNCTION OF NATIONAL EXCHANGE CENTERS FOR INTERNATIONAL EXCHANGE OF PUBLICATIONS UNESCO BULLETIN FOR LIBRARIES, 1976, 30 (02): : 83 - &
- [22] ADOPTION OF NEW CONVENTIONS ON THE EXCHANGE OF PUBLICATIONS UNESCO BULLETIN FOR LIBRARIES, 1959, 13 (2-3): : 29 - 35
- [24] THE INTERNATIONAL EXCHANGE OF PUBLICATIONS WITH AFRO-ASIAN COUNTRIES UNESCO BULLETIN FOR LIBRARIES, 1962, 16 (03): : 140 - 143
- [28] NEW PUBLICATIONS ON QUESTIONS OF INTERNATIONAL POLITICS EUROPA ARCHIV, 1974, 29 (09): : 299 - 304
- [30] NEW TRENDS IN SYSTEM OF SCIENTIFIC AND TECHNICAL PUBLICATIONS ZEITSCHRIFT FUR CHEMIE, 1971, 11 (08): : 316 - &