# | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
file U (instruments, related artefacts and techniques) : 1113 titles file V (technology, industry, engineering, transport, architecture, etc.) : 64 titles file W (clocks & watches) : 310 titles file X (scientific societies) : 74 titles file Y (astrolabes) : 134 titles G (medicine, human anatomy, pharmacy, medical instruments) : 784 titles H (geology, mineralogy) : 91 titles I (museums, museum history, museology, etc.) : 228 titles J (cartography) : 125 titles K (maritime history, general navigation) : 71 titles