| Author's List |
| title | creator | language | description | tableOfContents | contributor | subject | created |
| Preliminary Survey of a Paleocene Faunule from the Angels Peak Area, New Mexico | Wilson, Robert W. | en | 2010-04-29 | ||||
| A Preliminary Study of the Emotion of Love between the Sexes | Bell, Sanford | en | Love; Child psychology | 2009-03-05 | |||
| Preliminary Specifications: Programmed Data Processor Model Three (PDP-3) October, 1960 | Digital Equipment Corporation | en | PDP-3 (Computer); Electronic digital computers | 2009-07-20 | |||
| Preliminary Report of the Commission Appointed by the University of Pennsylvania to Investigate Modern Spiritualism In Accordance with the Request of the Late Henry Seybert | Seybert Commission, The | en | 2004-04-01 |