# | 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 Q (biography) : 976 titles file R (general science, general history of science, philosophy of science) : 253 titles file REF (reference) : 38 titles file S (physics, experimental philosophy, physics instruments) : 274 titles file T (pure mathematics) : 124 titles 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