TY  - BOOK
AU  - Gardner,Martin
TI  - Time travel and other mathematical bewilderments
SN  - 071671924X
AV  - QA95 .G325 1988
U1  - 793.7/4 19
PY  - 1988///
CY  - New York
PB  - W.H. Freeman
KW  - Mathematical recreations
N1  - Includes bibliographies and index
ER  -