OECD publications are one of the largest and most reliable sources of comparative statistics as well as economic and social data.
Access to the Read level for all PP users.

One of the most recognised and reputable dictionaries of the English language. Covers both the current meanings of words and their historical origins. Contains 600,000 words and 3.5 million quotations.

PLOS is the publisher of recognized and highly ranked Open Access journals with Impact Factor. These are: PLOS One, PLOS Biology, PLOS Computational Biology, PLOS Neglected Tropical Diseases, PLOS Medicine, PLOS Genetics, PLOS Pathogens.

A bibliographic and factual database containing information in the field of organic, inorganic and organometallic chemistry and related sciences: chemical engineering and biomedical sciences. It allows you to search for information on various types of chemical reactions and procedures, the synthesis of new compounds, methods of identifying compounds and their physicochemical, bioactive and toxicological properties. The base provides support for research in the field of chemistry and related sciences, including research on new drugs, materials and food. In addition to scientific literature, it provides access to chemical patents and research data.

Open Access repositories directory, where repositories from all over the world are catalogued. They are mainly analyzed in terms of the technologies used to share data and activity (number and increment of available records). When planning publishing in a repository, it is worth checking its publication potential in this database.

The Repository of Centre for Open Science CeON is addressed to the Polish scientific community. It is a place where you can deposit various kinds of scientific materials, such as: articles, books, conference materials, reports or dissertations. The repository makes its collections available on an Open Access basis, it is adapted for fast and effective promotion of materials on the Internet. The publishing process is efficient and simple.

Multi-disciplinary repository and digital library for scientific institutions forming the Consortium of Digital Repository of Scientific Institutes. It covers a wide range of resources, including digitized archival materials, scientific publications, research documentation and cultural heritage. There are many current publications in these resources - including latests numbers of journals issued by individual Institutes. Most of the resources are available free of charge, and their subject matter is very diverse.

The Open Research Data Repository (RepOD) is dedicated to every field of science. It is a Polish repository of open research data, created for scientists and institutions interested in sharing their resources. Each deposited dataset is provided with a DOI number. It is run by the Open Science Platform team of the Interdisciplinary Centre for Mathematical and Computational Modelling at the University of Warsaw.