TY  - BOOK
AU  - Isaac Newton
TI  - Philosophiae Naturalis Principia Mathematica
KW  - Engineering and Mathematics
UR  - https://new.zodml.org/sites/default/files/2023-07/philosophiae_naturalis_principia_mathematica_by_isaac_newton_tag_mechanics_early_works_to_1800_celestial_mechanics.epub
ER  -