Polimeri: Plastics and Rubber Journal - (2003-2013) [PDF] | Croatian, English | Society of Plastics and Rubber Engineers, Croatia.
Polimeros - Ciencia e Tecnologia - Articles (1997-present) [HTML, PDF] | Portuguese, selected papers in Spanish, English | Brazilian Polymer Association.
Polish Journal of Chemical Technology - (2007-present) | West Pomeranian University of Technology, Szczecin, Poland.
Polish Journal of Food and Nutrition Sciences ( Pol. J. Food Nutr. Sci. ) - (2011-present) [PDF] | chemistry of food science, etc. | Institute of Animal Reproduction and Food Research of Polish Academy of Sciences in Olsztyn.
[?] Polish Journal of Pharmacology - Articles (2001-2004) [PDF], and Pharmacological Reports - Articles (2005-present) [PDF] | Institute of Pharmacology, Polish Academy of Sciences.
Polymer Chemistry ( Polym. Chem. ) - All issues (2010-2011); Issue #1 of each volume (2012-present) [PDF] | all aspects of synthetic and biological macromolecules | free registration required | Royal Society of Chemistry.
Polymer Journal - (1970-2009) | The Society of Polymer Science, Japan.
Polymers - (2009-present) | MDPI.
Polymers in Medicine - Polimery w Medycynie - (2010-present) | Wroclaw Medical University, Poland.
Portugaliae Electrochimica Acta - Articles (1999-present) [HTML, PDF] | english (mainly), portuguese, french and spanish | Portuguese Electrochemical Society.
Procedia Chemistry - (2009-present) | e-only product focusing entirely on publishing conference proceedings | Elsevier.
Procedia Earth and Planetary Science - (2009-present) | e-only product focusing entirely on publishing conference proceedings | Elsevier.
Procedia Environmental Sciences - (2010-present) | e-only product focusing entirely on publishing conference proceedings | Elsevier.
Proceedings (Chemical Sciences), Proceedings of the Indian Academy of Sciences – Part A - Articles (1977-2003) [PDF] | Journal of Chemical Sciences since 2004.
[?] Proceedings for Natural Sciences, Matica Srpska Novi Sad title in Serbian: Zbornik Matice srpske za prirodne nauke - (2000-2011) [PDF] | English, Serbian | multidisciplinary | Matica Srpska Department of Natural Sciences, Novi Sad, Serbia.
Proceedings of the Estonian Academy of Sciences - (2008-present); Proceedings of the Estonian Academy of Sciences. Chemistry - (1997-2007).
Proceedings of the Imperial Academy - (1913-1944) [PDF] | Current title: Proceedings of the Japan Academy, Ser. B | interdisciplinary.
Proceedings of the Japan Academy, Series B - Articles (2003-present); also: Proceedings of the Japan Academy. Ser. B: Physical and Biological Sciences (1977-2002); Proceedings of the Japan Academy (1945-1977) [PDF].
Proceedings of the National Academy of Sciences of the United States of America ( PNAS ) - (1915-present) [PDF, HTML] | multidisciplinary; chemistry included.
Proceedings of the National Science Council, Republic of China. Part D: Mathematics, Science and Technology Education ( Proc. Natl. Sci. Counc. ROC(D) ) - Articles (1995-2002) [PDF] | Taiwan
Proceedings of the Oklahoma Academy of Science - Articles (1921-2013) | interdisciplinary.
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences ( Proceedings A ) - (1905-1944* , 2004*-...(2 years embargo); * stands for a moving wall as for December 2014, each January the years with an * will move forward by one); Proceedings of the Royal Society of London (1830-1904).
Processing and Application of Ceramics - (2007-present) | international journal | University of Novi Sad, Serbia.
Progress in Natural Science: Materials International - Articles (2008-present) | Chinese Materials Research Society, International Union of Materials Research Societies | Elsevier.
Progress in Nuclear Science and Technology - Conference proceedings (2011-2014) [PDF] | Atomic Energy Society of Japan.
Progress in Reaction Kinetics and Mechanism - (1997-2003) | kinetics and mechanisms of chemical processes in the gas phase and solution of both simple and complex systems | Science Reviews 2000 Ltd, UK.
Protein Engineering, Design and Selection ( PEDS ) - Articles (1996-...(1 year moving wall)) [HTML, PDF] | Prior to 2004, the journal was called Protein Engineering.
Protein Science - Articles (1992-...(1 year moving wall)) [HTML, PDF] | The Protein Society ; Wiley.
Proteome Science - Articles, Supplemental Data (2003-present) [HTML, PDF] | Archive at PubMed Central .
Pure and Applied Chemistry - Full access (1960-...(except for the current and preceding volumes)); IUPAC Technical Reports and Recommendations (until present) | IUPAC.
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