Telecommunications
1857-1858
1863
1863-7
1865-1866
Radio Communication
1899
Ethnography and Folk Medicine
1885-1895
1850
1851
Smoking
1820-1860
1856
1846
1910
Plastics and Modern Materials
1942-1945
Materia Medica & Pharmacology
c. 1950
1866
Mining & Ore Dressing
1900-1938
Orthopaedics
1890-1930
1848-1849
c. 1891
1851-1862