TY  - BOOK
AU  - Gordon,Cyrus Herzl,1908-
TI  - Riddles in history
SN  - 0517504146
PY  - 1974///
CY  - Crown Publishers : New York
KW  - America
KW  - Discovery and exploration
KW  - Pre
KW  - Columbian
KW  - Miscellanea
N1  - Bibliography: p. 167-171
ER  -