
Laennec's stethoscope
1815-1825
1815-1825
1821
1815
1815
1863-7
1821
1816
1815
1893-4
2000-100 BCE
circa 1821-1825
1815-1825
1823-1825
1822
1705-1737
1820
1823
1815
1825
1821
1820
4000-2001 BCE
1823-1825
1821
1668; 1924
1990-95
1642-1649 (original); 1883 (model)
1610; 1923
1823
1936
1846-08
c.1825
1819
1815-1825
1817
1815
circa 3000 BCE
1824
1825
2000 BCE
1820
1819
1817-1820
1821
1820
1824
1825
1825
1823
1825