# | 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 |
D (astronomy, cosmology, telescopes, observatories) : 864 titles E (microscopes & microscopy, optics, spectroscopy) : 1101 titles Envelope files () : 14 titles F (photography) : 351 titles file A (magic, astrology, divination, etc.) : 52 titles file B (lathes, turning, machine tools, workshop tools) : 6 titles file BIBL (bibliography) : 43 titles file CAL (calendrics, chronology) : 14 titles file CATA (instrument trade catalogues) : 104 titles file D (astronomy, cosmology, telescopes, observatories) : 485 titles