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Free to reuse

The content is published under the CC BY 4.0 licence. You may copy it, translate it, print it and pass it on, for your classes as much as for the people around you, on one condition only: credit ODERSA.

English
The LibraryODERSA publishing house
An ODERSA resource · Knowledge programmeA book only goes online once it is whole and read by someone else.

What is new

Whatever changes gets a date. A what-is-new page that does not say when is of no use.

The record of changes, newest first
DateWhat changedWhat it changes for you
23 August 2026The language rule of the house is now written on the site: a book is born in the language it is written in, and it is not the translation of another one. The passages that announced a simultaneous release in all seven languages are withdrawn, and the wordings that still described an empty catalogue are corrected.You know what the catalogue in your language holds, and why it does not hold translations of the books of the others.
11 August 2026The French-language catalogue opens with its first volumes: a textbook on fractions, a conjugation workbook, a textbook on water and the weather, a collection of stories to sound out, and a book on the great periods of history.You can read them online, chapter by chapter, and reuse their text under the Creative Commons Attribution licence.
6 August 2026The publishing house opens its shopfront: the making method, the licence, the page for teachers, the frequent questions and the catalogue in its empty state.You can find out what this house will publish, on what conditions, and what you will be able to do with it, before a single book exists.
6 August 2026The positioning of the house is corrected after an online check, language by language, of what already exists in openly licensed textbooks.What this site says about the rest of the world can be verified: the addresses are on the sources page, with the date they were checked.
6 August 2026The site becomes readable without a connection for pages already visited, and that claim is proven by a program that switches the server off.A page opened once can be reread on a train, in a classroom with no network, or on an exhausted data plan.
The marbled edge of a nineteenth-century book seen from above: irregular veins run across the paper, with the embossed cloth board visible below.
The marbled edge of an 1856 binding. This page announces nothing: it records what has already happened, on its date.Credit

What goes into this record

  • A book published, with its title, its languages and its page count.
  • A correction made to a book after a report, with what changed and the new verification date.
  • One more language built, once parity holds.
  • A change to a rule of the house: licence, page floor, checking method.
  • A new or rebuilt page on this site.

The same record is published as a feed, whose address is on the site map and in the settings panel. A feed is read in the software of your choice, it asks for no email address and no account, and it tells nobody that you follow it.

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