# | 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 |
P (zoology, general natural history) : 282 titles PER (periodicals) : 432 titles Prints (prints collection, printed ephemera, portraits) : 36 titles Q (biography) : 734 titles R (general science, general history of science, philosophy of science) : 926 titles Radcliffe Tracts () : 1366 titles REF (reference) : 243 titles RMC (obsolete classification for Royal Microscopical Society non-special collection) : 4 titles S (physics, experimental philosophy, physics instruments) : 558 titles SALE (auction sale catalogues) : 74 titles Scrapbook () : 37 titles SYLL (syllabus collection) : 24 titles T (pure mathematics) : 272 titles U (instruments, related artefacts and techniques) : 1380 titles UNC (unclassified) : 21 titles V (technology, industry, engineering, transport, architecture, etc.) : 184 titles W (clocks & watches) : 329 titles X (scientific societies) : 143 titles Y (astrolabes) : 93 titles Z (electricity, electrical communications, magnetism) : 74 titles