


Остановите войну!
for scientists:


default search action
"The circulation/acquisition ratio: An input-output measure for libraries."
Marilyn M. Levine (1980)
- Marilyn M. Levine:
The circulation/acquisition ratio: An input-output measure for libraries. Inf. Process. Manag. 16(6): 313-315 (1980)

manage site settings
To protect your privacy, all features that rely on external API calls from your browser are turned off by default. You need to opt-in for them to become active. All settings here will be stored as cookies with your web browser. For more information see our F.A.Q.