TY  - BOOK
AU  - Cohen,I.Bernard
TI  - Introduction to Newton's "Principia"
SN  - 0521293383
U1  - 531 
PY  - 1971///
CY  - Cambridge [Eng.]
PB  - University Press
KW  - Newton, Isaac,
KW  - Newton, Isaac-Principia
ER  -