TY  - BOOK
TI  - Soviet Union: Forged during a millennium of expansion, the largest country on earth is an unwieldy federation containing a hundred ethnolinguistic groups
PY  - 1990///
CY  - Washington : 
PB  - National Geographic
KW  - URSS
KW  - MAPAS
KW  - MAPA
N1  - Mapa suelto de la Unión Soviética. Producido por la revista National Geographic

ER  -