| 4318 | 50 | A L Osborne | A dictionary of English domestic architecture | 1954 | B/00.1 | Osborn |
| 4321 | 1455 | J F Oultram | The builder's foreman : a practical guide to his training | 1916 | B/02.3 | Oultra |
| 4322 | 4827 | ? | St. Mary the Virgin's church, Battle | ? | B/26.2 | Sussex |
| 4323 | 726 | L J Overton | Domestic hot water supplies & central heating by hot water | 1939 | WCP | Overto |
| 4324 | 1163 | Oxford Preservation Trust | Preservation of buildings of historical or architectural interest | 1966 | B/10.0 | Oxford |
| 4325 | 2243 | compiled by the Technical Committee of Oxford District Council of the Institute of Plumbing | Sheet roofing data book and design guide | 1982 | B/05.62 | Oxford |
| 4327 | 7190 | C Pace, J Birch | Look around the street | 1988 | E/16.6 | Pace, |
| 4328 | 7189 | C Pace, J Birch | Look around homes | 1988 | B/22 | Pace, |
| 4331 | 133 | Florence A Pagden | History of Alfriston | 1927 | E/15 | Sussex |
| 4334 | 7051 | W & J Pain | Decorative details of the 18th centurry | 1946 | B/06.0 | Pain, |
| 4335 | 6825 | edited by Crispin Paine and John Rhodes | The worker's home : small houses in Oxfordshire through three centuries | 1979 | B/22 | West M |
| 4337 | 4 | Humphrey Pakington | English villages and hamlets | 1941 | B/29 | Paking |
| 4339 | 4778 | Geoffrey Palmer | The church of the Blessed Virgin Mary at Clapham in the hundred of Brightford Rape of Bramber | 1952 | B/26.2 | Sussex |
| 4340 | 131 | W D Parish | A dictionary of the Sussex dialect and collection of provincialisms in use in the county of Sussex | 1875 | E/71.7 | Parish |
| 4341 | 7417 | W D Parish | A dictionary of the Sussex dialect and collection of provincialisms in use in the county fo Sussex | 1875 | E/71.7 | Parish |
| 4342 | 1559 | W D Parish and Helena Hall | A dictionary of the Sussex dialect and collection of provincialisms in use in the county of Sussex | 1957 | E/71.7 | Parish |
| 4343 | 107 | E Parker | Highways & byways in Surrey | 1908 | E/15 | Surrey |
| 4344 | 6970 | Vanessa Parker | The making of Kings Lynn : secular buildings from the 11th to the 17th century | 1971 | B/20 | East A |
| 4345 | 236 | Vanessa Parker | The making of Kings Lynn : secular buildings from the 11th to the 17th century | 1971 | B/22 | East A |
| 4346 | 2301 | L Parkes, H Kenwood | Hygiene & public health | 1901 | WCP | Parkes |
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