TY - GEN digital ID - 139446708 TI - A history of inventions and discoveries AU - Beckmann, Johann AU - Johnston, William AU - Gale Cengage Learning PY - 1817 PB - London Longman, Hurst, Rees, Orme, and Brown DB - UniCat KW - Inventions -- History KW - Johnston UR - https://www.unicat.be/uniCat?func=search&query=sysid:139446708 AB - ER -