The Law of balances : the Hackett educational system.
- Creator Personal:
- Hackett, Samuel.
- Title:
- The Law of balances : the Hackett educational system.
- Call Number:
- P530
- Date:
- 1931
- Description:
- Pamphlet. A "...compilation of evidence on the laws of nature."
- Subject Topical:
- Natural law., Science--Philosophy.