TY  - BOOK
AU  - Hellemans, Alexander,
AU  - Bunch,Bryan H.
TI  - The timetables of sciences: A chronology of the most important people and events in the history of science 
SN  - 0671621300
AV  - Q125 H55
PY  - 1988///
CY  - New York
PB  - Simon and schuster
KW  - Ciencia
KW  - Historia
KW  - Cronología
KW  - Tablas
ER  -