TY  - BOOK
ED  - Field Enterprises Educational Corporation.
TI  - The World book encyclopedia volume 20: U-V 
SN  - 0716600749
AV  - AE5 .W55 1972
U1  - 031 
PY  - 1974///
CY  - Chicago
PB  - Field Enterprises Educational Corporation
KW  - Encyclopedias and dictionaries
N1  - Includes bibliographies
ER  -