Textile Industry
1920-1960
Psychology, Psychiatry & Anthropometry
1936-1940
Telecommunications
1910-1930
Ethnography and Folk Medicine
1914
Photographic Technology
1978-1984
Ophthalmology
1925-1935
Surveying
1900-1950
1880-1920
Domestic Appliances
Optics
Scientific Instruments & Research
1900
Coal Mining
1930-1960
1890-1900
1981
1895-1905
1900-1930
Collection Unassigned
1900-1960
Meteorology
1801-1900
1950
1835-1845
Asian Medicine
1850-1930
Navigation
1750-1900
Television
Materia Medica & Pharmacology
1900-1910
1935-1945
Radio Communication
1930-1940
1910-1920
1955-1965
Printing & Writing
1780-1800
1912
1920-1940
1950-1955
1930-1935
1888
1865-1880
1850
1905-1910
1960 -1980
Public Health & Hygiene
1940-1960