TY  - BOOK
AU  - Tannenbaum Beulah
AU  - Stillman Myra
TI  - Understanding time: the science of clocks and calendars
U1  - 529 
PY  - 1958///
CY  - London
PB  - McGraw-Hill
KW  - Calendars
KW  - Chronology
KW  - Time
ER  -