TY  - BOOK
AU  - John Beckmann
TI  - A History of Inventions, Discoveries, and Origins, Volume 2 (of 2)
KW  - Technology
UR  - https://new.zodml.org//sites/default/files/2023-06/a_history_of_inventions_discoveries_and_origins_volume_2_of_2_by_beckmann.epub
ER  -