| | Lodén, Lars Olof, 1930-20... | Tid : en bok om tideräkning och kalender... | 1968 | | 25 bibl. |
| | Koestler, Arthur, 1905-19... | The sleepwalkers / with an introduction ... | 1968 | | 5 bibl. |
| | | Space research : proceedings of open mee... | 1968 | | 3 bibl. |
| | Asimov, Isaac, 1920-1992. | Environments out there. | 1968 | | 1 bibl. |
| | Becker, Friedrich | Geschichte der Astronomie / von Friedric... | 1968 | | 3 bibl. |
| | Bickerman, E. J. (Elias J... | Chronology of the ancient world | 1968 | | 8 bibl. |
| | Brown, Basil | Astronomical atlases, maps and charts : ... | 1968[1932] | | 2 bibl. |
| | Carleton, George | The madnesse of astrologers / George Car... | 1968[1924] | | 2 bibl. |
| | Lovell, Bernard, Sir, 191... | Vad vi vet om universum | 1968 | | 9 bibl. |
| | | Introduction to space science / edited b... | 1968 | | 4 bibl. |