-~~------------.

2. Zettel 
C 500.240~ 

Catalogue periodicals annuals. -Catalogue 
of periodic~ls, annuals and special series. 
Katalog periodiki, ezegodnikov i special' 
~ich seriJ poly~ae'mich bibliotekoj oon, 
Zeneva. -Geneva: United Nations LibrgFY,
Processing Section 1972. XI, 454 S. 4