Answer:
anthology
Step-by-step explanation:
Science Digest and Reader's Digests are well-known examples of anthologies: these are bodies of works on given topics
An anthology from the Greek means "a collection of flowers"
They contain different works from different authors on a common array of topics and often contain only excerpts or selections from major works.
Their purpose is also of promoting this knowledge to not necessarily experts. Think of the many articles and topics covered by these magazines and you would see how wide range of literature they can include on a theme.
They make it with such a friendly format and easy access