ovicorps

3 ms·

1. 1.▲
   by ovicorps 6y ago

   Classical physics books are LESS expensive. I recommend the book: On The Shoulders Of Giants.
2. 2.▲
   by ovicorps 6y ago

   I pay $40 or less for a quantum mechanic book. Knowledge is not expensive.
3. 3.▲
   by ovicorps 6y ago

   Good one!