Ob Oblong
ÖB Österreichischer Bundesverlag
ObP Ober Park
Oc Oceana
Od Odeon
Og Oldenburg
OHUP Ohio University Press
Oi Olivetti
OJ Odile Jacob
Ol Olschki
Om Omega
On Oktagon
Oo Octavo
OOZK OKrajobrazu środek Ochrony Zabytkowego
Op Opetusministeriö
OP Overlook Press
Or Oresko
O-R Ostfildern-Ruit
Os Osgood
ÖS Österreichische Staatsdruckerei
OSHA Old State House Assn.
O&SHDW&B Osborn & Shipton, Hodges, Davis, Ward, & Baldwin
Ot Otterloo
OUP Oxford University Press
Ox Oxford
Oy Olympia
Oyo Olympio
P Penguin Books
Pa Paris
PadS Public Administration Service
PaG Ponte alle Grazie
Pal Palombi
Pan Pantheon
Pao Palermo
PAP Princeton Architectural Press
Par Parangon
PASUP Press Pennsylvania State University
Pav Pavilion Books
PavT Pavilion Trust
P-AVG Philosophisch- Anthroposophischer Verlag am
Goetheanum
P&B Preiss & Bestetti
PBV Preserve Bottle Village
PC Peter Crawley
P&C Prince & Cooke
PCP Park Circus Promotions
PCS Penguin Collectors Society
Pd Potsdam
PDP Philippe-Denis-Pierres
Pdl’A Pavillon de l’Arsenal
Pe Perroneau
Pel Pelican
Pen Perron
Pet Petersberg
Pf Pfalzgalerie
P&F Payne & Foss
Pg Pickering
Pgh Pittsburgh, PA
PGM J. Paul Getty Museum
Ph Phaidon Press Ltd.
PH Phoenix House
P-Ha Prentice-Hall
Phn Philipsen
Pi Picard
Pia Pia Promedia
Pic Picador
Pin Pitman
Pit Pitkin
P&K Presse & Kulturabteilung
Pk Panckoucke
Pl Plenum
PL Philosophical Library
Ply Plymouth
Pm Phillimore & Co. Ltd, Chichester
PM Pall Mall
P-M Paris-Musées